{"id":4103,"date":"2026-07-08T05:55:27","date_gmt":"2026-07-08T05:55:27","guid":{"rendered":"https:\/\/agriculturalgearboxes.top\/?post_type=product&p=4103"},"modified":"2026-07-08T06:17:38","modified_gmt":"2026-07-08T06:17:38","slug":"hc-01-725-pit-digger-gearbox","status":"publish","type":"product","link":"https:\/\/agriculturalgearboxes.top\/fi\/product\/hc-01-725-pit-digger-gearbox\/","title":{"rendered":"HC-01-725 Pit Digger Gearbox"},"content":{"rendered":"
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Agricultural Gearbox Specialist<\/div>\n

HC-01-725 Pit Digger Gearbox<\/h2>\n

Heavy-duty agricultural pit digger gearbox engineered for post-hole drilling, auger-driven fencing, and precision land preparation across UK farming operations.<\/p>\n

Ratio 3.18:1<\/span>
\n40 HP Rated<\/span>
\n540 rpm Input<\/span>
\n28 Kg Net Weight<\/span><\/div>\n<\/div>\n

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\"HC-01-725<\/div>\n
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Malli<\/div>\n
HC-01-725<\/div>\n<\/div>\n
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Hakemus<\/div>\n
Post-hole diggers, auger drives, fencing machinery, land drainage tools<\/div>\n<\/div>\n

\ud83d\udce7 Pyyd\u00e4 tarjous nyt<\/a><\/p>\n

Fast response within 24 hours \u2022 UK-based enquiries welcome<\/div>\n<\/div>\n<\/div>\n

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What Makes the HC-01-725 the Right Choice for UK Farmers?<\/h2>\n

When the ground is hard, the schedule is tight, and the machinery needs to perform without fail, the pit digger gearbox at the heart of your auger system matters more than most operators realise. The HC-01-725 pit digger gearbox has been developed to answer exactly those demands \u2014 combining a precisely engineered 3.18:1 reduction ratio with a robust 40 HP power rating that handles everything from soft loam to compacted clay. Whether you are digging fence post holes across open fields in Yorkshire, installing irrigation infrastructure in the East Midlands, or preparing vineyards and orchard plots in Kent, this gearbox delivers the torque multiplication and mechanical reliability that UK agricultural work genuinely requires. The pit digger gearbox interfaces cleanly with standard tractor PTOs running at 540 rpm via an Optic ax1S input\/output configuration, making integration straightforward on a wide range of compact and medium-frame tractors without adaptation plates or specialist fittings.<\/p>\n

At 28 kg net weight, the HC-01-725 is built to be field-serviceable without sacrificing durability. The 11\/35 tooth configuration and 5.08 module gear set are precision-cut to tight tolerances, reducing backlash and extending service intervals even under continuous-duty operation. For contractors running multiple auger rigs or farmers who cannot afford downtime during planting or fencing seasons, this level of mechanical consistency is not a bonus \u2014 it is a baseline expectation that the HC-01-725 consistently meets.<\/p>\n<\/div>\n

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Tekniset tiedot<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Parametri<\/th>\nValue \/ Description<\/th>\n<\/tr>\n<\/thead>\n
ITEM<\/td>\nHC-01-725<\/td>\n<\/tr>\n
Suhde<\/td>\n3.18:1<\/td>\n<\/tr>\n
Hampaat<\/td>\n11\/35<\/td>\n<\/tr>\n
Moduuli<\/td>\n5.08<\/td>\n<\/tr>\n
Power (HP)<\/td>\n40<\/td>\n<\/tr>\n
Rated Input<\/td>\n540 rpm<\/td>\n<\/tr>\n
Input\/Output Description<\/td>\nOptic ax1S<\/td>\n<\/tr>\n
Weight (N.W)<\/td>\n28 Kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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\ud83d\udcca Engineering Drawing<\/div>\n

\"HC-01-725<\/p>\n<\/div>\n<\/div>\n

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Performance Advantages Built for British Agricultural Conditions<\/h2>\n

UK farming terrain varies enormously \u2014 from sandy Norfolk soils to heavy Devon clay and stony Scottish upland ground. The HC-01-725 pit digger gearbox has been engineered with this range of conditions in mind. Its gear geometry provides consistent torque delivery without the spike loads that cause premature wear on cheaper alternatives, and the housing tolerances are tight enough to maintain oil film integrity even during extended auger operation. Below is a summary of the performance benefits that set this unit apart from generic agricultural gearbox options available through UK distributors.<\/p>\n

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\u2699<\/div>\n
Precision Gear Mesh<\/div>\n

Module 5.08 gear pairing with 11\/35 tooth ratio delivers smooth, low-vibration torque transmission that protects both the gearbox and the auger assembly from damaging shock loads.<\/p>\n<\/div>\n

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\ud83d\udcc8<\/div>\n
40 HP Power Handling<\/div>\n

Rated for 40 horsepower input, the HC-01-725 suits a broad range of mid-sized tractors common across UK agricultural operations, from 60 hp compact units up to 100+ hp workhorses.<\/p>\n<\/div>\n

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\ud83d\udd28<\/div>\n
Direct PTO Compatibility<\/div>\n

The Optic ax1S input\/output configuration aligns with the 540 rpm PTO standard found across European-spec tractors, making the HC-01-725 a plug-and-use solution without costly adaptor hardware.<\/p>\n<\/div>\n

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\ud83e\udde9<\/div>\n
Field-Ready Weight<\/div>\n

At 28 kg net weight, the HC-01-725 is robust enough to withstand continuous digging cycles without being so heavy that it strains front-mount or three-point linkage systems on lighter tractors.<\/p>\n<\/div>\n

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\ud83c\udd95<\/div>\n
Long Service Intervals<\/div>\n

Precision housing tolerances maintain lubrication film integrity during extended operation, reducing heat build-up and extending service intervals well beyond those seen on budget-tier pit digger gearbox alternatives.<\/p>\n<\/div>\n

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\ud83d\udce6<\/div>\n
Export-Ready Packaging<\/div>\n

All units are packaged for safe international shipping to UK ports, with documentation ready for customs clearance and traceability records that satisfy modern agricultural machinery procurement requirements.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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How the HC-01-725 Works: Materials, Design and Operating Principle<\/h2>\n
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\ud83d\udd25 Gear Material and Heat Treatment<\/h3>\n

The drive gears in the HC-01-725 pit digger gearbox are manufactured from high-grade alloy steel, case-hardened to achieve a surface hardness that resists pitting and spalling even during high-cycle digging operations in abrasive soil conditions. The 11-tooth pinion and 35-tooth wheel are cut to a module of 5.08 \u2014 a tooth size that balances load distribution across each contact face while remaining practical to manufacture at production scale. Gear flanks are finished to a surface roughness specification that supports hydrodynamic lubrication at 540 rpm input, keeping friction losses low and operating temperatures within acceptable limits throughout a full working day.<\/p>\n

\ud83e\uddf0 Housing and Sealing<\/h3>\n

The gearbox casing is produced from high-strength cast iron or ductile iron, depending on the application variant, providing the structural rigidity needed to maintain shaft alignment under the lateral and axial loads generated during auger penetration into compacted ground. Shaft seals are selected to resist contamination ingress from soil, grit and moisture \u2014 conditions that are standard in UK field work but that can quickly destroy lesser-quality sealing arrangements. The bearing selection follows industrial rather than light-duty agricultural standards, which is one reason the HC-01-725 maintains its dimensional accuracy across many thousands of operating cycles.<\/p>\n<\/div>\n

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\ud83c\udfaf Operating Principle<\/h3>\n
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1<\/div>\n
PTO power at 540 rpm enters the input shaft via the Optic ax1S connection, directly from the tractor PTO.<\/div>\n<\/div>\n
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2<\/div>\n
The 11-tooth pinion meshes with the 35-tooth output gear, reducing speed by a factor of 3.18:1 while multiplying torque proportionally.<\/div>\n<\/div>\n
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3<\/div>\n
High-torque, low-speed drive is delivered to the auger shaft, enabling deep, clean penetration into the ground regardless of soil compaction level.<\/div>\n<\/div>\n
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4<\/div>\n
Oil bath lubrication within the sealed housing keeps all gear surfaces and bearings protected throughout the duty cycle.<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\ud83d\udca1 Application Tip<\/div>\n
For stony or heavily compacted UK clay soils, pair the HC-01-725 with a 200 mm auger bit and reduce forward pressure to let the gear reduction do the work \u2014 this significantly extends both bit and gearbox service life.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Where the HC-01-725 Pit Digger Gearbox Performs Best<\/h2>\n

\"Agricultural<\/p>\n

Across the UK agricultural sector, post-hole drilling, land drainage and precision excavation work create consistent demand for a pit digger gearbox that can be relied upon season after season. The HC-01-725 has been deployed in a range of distinct operational contexts, each placing different demands on the gear set, housing and PTO interface. The following use cases represent the primary sectors in which this agricultural gearbox adds measurable value.<\/p>\n

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\ud83e\uddf7<\/div>\n
Fencing and Post Installation<\/div>\n
Rural farms, equestrian centres and livestock holdings across England, Scotland and Wales rely on efficient post-hole boring for new fencing lines.<\/div>\n<\/div>\n
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\ud83c\udf3f<\/div>\n
Orchard and Vineyard Planting<\/div>\n
Precise, consistent hole depth is critical when planting fruit trees or vines. The 3.18:1 reduction ratio provides the controlled output speed needed for accuracy.<\/div>\n<\/div>\n
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\ud83d\udca7<\/div>\n
Land Drainage Installation<\/div>\n
Installing French drains, soakaway pits and field drainage in heavy UK clay soils demands consistent torque over extended boring cycles.<\/div>\n<\/div>\n
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\ud83c\udfd7<\/div>\n
Rural Construction Groundwork<\/div>\n
Rural building projects requiring pier or foundation boring at shallow to medium depths benefit from the HC-01-725s 40 HP capacity and direct PTO drive.<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Related Agricultural Gearbox Products<\/h2>\n

The HC-01-725 sits within a wider family of precision agricultural gearboxes designed to cover the full range of horticultural, arable and livestock machinery drive requirements. Two of the most frequently paired units are listed below, each sharing the same quality standards and engineering philosophy as the HC-01-725.<\/p>\n

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\u2699 HC-RV022 (X) Aluminum Box Series Gearbox<\/div>\n

A lightweight aluminum-housing gearbox from the RV series, suited to weight-sensitive agricultural implement applications where corrosion resistance and compact dimensions are priorities alongside power transmission performance.<\/p>\n

View Product \u2192<\/a><\/p>\n<\/div>\n

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\u2699 HC-RV010 Aluminum Box Series Gearbox<\/div>\n

The HC-RV010 offers a compact ratio option in the aluminum box series for lower-power applications, making it a practical companion unit for orchard sprayers, seeders and lightweight cultivation attachments across British farms.<\/p>\n

View Product \u2192<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Customer Success: Stonebridge Agricultural Contractors, Lincolnshire, UK<\/h2>\n
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\ud83c\udfed About the Client<\/div>\n

Stonebridge Agricultural Contractors is a mid-sized contracting business based in the Lincolnshire Wolds, providing fencing installation, hedgerow management, drainage groundwork and precision tree planting across approximately 45 farm clients covering mixed arable and livestock holdings. With an annual workload of roughly 3,200 post-holes drilled, gearbox reliability is a direct business-critical factor: an unexpected gearbox failure during fencing season means a delayed project, a dissatisfied farm client and a loss of daily contract income.<\/p>\n

\ud83d\udd27 The Challenge<\/div>\n

Prior to adopting the HC-01-725, Stonebridge was running a generic imported pit digger gearbox that struggled with the region’s characteristic heavy clay soils, particularly on land north of Market Rasen. Two units failed within the same season, one at the output shaft bearing and one due to gear tooth fracture under overload. Each failure cost approximately three working days and a replacement unit sourced at short notice.<\/p>\n

\u2713 The Outcome<\/div>\n

After switching to the HC-01-725 pit digger gearbox for the following season, Stonebridge completed their full fencing contract programme with zero gearbox failures. The unit handled Lincolnshire clay without issue, and the Optic ax1S connection fitted directly to their John Deere 5075E without modification. After 14 months of service, the gearbox required only a routine oil check \u2014 no bearing replacement, no gear wear concerns. The business has since purchased two additional HC-01-725 units to equip their secondary digger rigs.<\/p>\n<\/div>\n

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0<\/div>\n
Gearbox failures in 14 months<\/div>\n<\/div>\n
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3,200+<\/div>\n
Post-holes completed per season<\/div>\n<\/div>\n
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3<\/div>\n
HC-01-725 units now in fleet<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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\ud83d\udcac What Our Customers Say<\/h3>\n
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\u2605\u2605\u2605\u2605\u2605\u2605<\/div>\n

We run three HC-01-725 units now across our fleet. Not a single issue since we switched. The torque delivery on compacted Lincolnshire clay is genuinely impressive compared to what we were using before.<\/p>\n

James T. \u2014 Agricultural Contractor, Lincolnshire<\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605\u2605<\/div>\n

Fitted straight onto our New Holland T5 without any adapter needed. The 540 rpm PTO connection is exactly standard. Good build quality and the price was fair. Will be ordering again when we expand.<\/p>\n

Neil W. \u2014 Farm Manager, North Yorkshire<\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605\u2605<\/div>\n

As a fencing contractor working across the Scottish Borders, I need equipment that handles hard ground without drama. The HC-01-725 has been faultless. The quote process was straightforward and delivery was timely.<\/p>\n

Angus M. \u2014 Fencing Contractor, Scottish Borders<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Manufacturing Capability and Custom Engineering Services<\/h2>\n

\"Agricultural<\/p>\n

The HC-01-725 pit digger gearbox is manufactured in a dedicated agricultural machinery gearbox production facility equipped with CNC gear cutting centres, precision heat treatment lines and computerised dimensional inspection stations. The manufacturing process from raw material input to finished gearbox takes place entirely within our controlled production environment, which means quality standards are applied consistently across every unit rather than being dependent on a supply chain of sub-contractors with variable standards.<\/p>\n

Beyond standard catalogue products, our engineering team offers a comprehensive custom gearbox design and manufacturing service that covers ratio modification, housing material substitution, alternative input\/output shaft configurations, mounting flange adaptation and bespoke paint and corrosion protection schemes for export to high-humidity or coastal environments. UK machinery manufacturers and OEM equipment integrators looking for a reliable pit digger gearbox supplier with genuine custom capability are welcome to submit technical specifications for quotation. Our team typically responds with a preliminary design proposal within five working days of receiving a full specification pack.<\/p>\n

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Get a Quote for Custom or Standard Units<\/a><\/div>\n<\/div>\n

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Usein kysytyt kysymykset<\/h2>\n
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What is the price of an HC-01-725 pit digger gearbox when buying from a UK agricultural machinery supplier?<\/div>\n
Pricing for the HC-01-725 pit digger gearbox varies depending on order quantity, shipping destination within the UK and any custom specification requirements. We recommend requesting a direct quote for the most accurate current pricing, as costs are affected by freight rates to UK ports. UK buyers benefit from bulk order pricing when procuring multiple units for fleet equipment or resale. Contact us via email or the quote form for a fast response with full pricing details including delivery cost to your location.<\/div>\n<\/div>\n
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Which tractor models commonly used on British farms are compatible with the HC-01-725 pit digger gearbox PTO input?<\/div>\n
The HC-01-725 uses an Optic ax1S input connection rated for 540 rpm PTO operation, which is the standard PTO speed found on the vast majority of tractors used across British farms in the 40 to 100 HP range. This includes popular UK models from John Deere, New Holland, Massey Ferguson, Kubota, Fendt and Case IH in appropriate power ranges. In most cases, no adaptor plate or custom coupling is required \u2014 the gearbox connects directly using a standard PTO shaft with matching stub.<\/div>\n<\/div>\n
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How does the 3.18:1 gear ratio of the HC-01-725 compare to other pit digger gearboxes for heavy clay soil conditions in England?<\/div>\n
A 3.18:1 ratio delivers a balanced trade-off between auger penetration speed and output torque, making it particularly well suited to the range of soil conditions found across England \u2014 from the lighter sandy soils of East Anglia to heavy clay in the Midlands and compacted upland soils in northern counties. Higher ratios provide more torque but slower drilling; the 3.18:1 figure on the HC-01-725 sits in a practical range that most UK agricultural contractors find productive without overstressing the auger bit in typical British soil profiles.<\/div>\n<\/div>\n
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Where can UK fencing contractors source a reliable agricultural pit digger gearbox supplier with fast shipping and custom ratio options?<\/div>\n
UK fencing contractors looking for a dependable pit digger gearbox with options for custom ratio or shaft configuration can enquire directly through agriculturalgearboxes.top. We supply standard catalogue models like the HC-01-725 as well as supporting custom engineering requests for modified gear ratios, alternative housing materials, and specialist input shaft configurations. Delivery to UK ports is coordinated with established freight partners, and we can provide shipping timelines and incoterm options at the quotation stage.<\/div>\n<\/div>\n
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What maintenance schedule should I follow for an HC-01-725 agricultural gearbox used in year-round UK farm contracting?<\/div>\n
For agricultural contracting operations that use the HC-01-725 through a full UK farming season \u2014 typically March to November \u2014 we recommend checking the oil level and condition every 250 operating hours or at the start and end of each main season, whichever comes first. The oil should be replaced if it shows signs of contamination from water ingress or metallic particles. Shaft seals should be inspected annually, and the external housing should be cleaned and inspected for cracks after particularly heavy-duty drilling campaigns in stony or gravelly ground. Following this schedule, the gearbox should deliver multiple seasons of reliable service.<\/div>\n<\/div>\n
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When should a UK farm contractor consider upgrading from a standard post-hole digger gearbox to a higher-torque agricultural gearbox like the HC-01-725?<\/div>\n
The clearest signal that an upgrade is needed is repeated gear or bearing failure within a single season, particularly if the work involves compacted clay, stony ground, or continuous-duty boring cycles of more than three or four hours at a stretch. If a standard lower-rated gearbox is running hot, exhibiting excessive backlash, or requiring more than one oil change per season due to contamination from overheating, moving to a unit with higher-rated components like the HC-01-725 typically eliminates these issues while reducing total cost per season when maintenance time and replacement costs are factored in.<\/div>\n<\/div>\n<\/div>\n<\/div>\n


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Ready to Source the HC-01-725 Pit Digger Gearbox?<\/h3>\n

Contact our team today for pricing, lead times, and custom engineering options for UK delivery.<\/p>\n

\ud83d\udce7 Pyyd\u00e4 tarjous \u2014 sales@agriculturalgearboxes.top<\/a><\/p>\n<\/div>\n

gzl:n muokkaama<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

HC-01-725 Pit Digger Gearbox \u2014 3.18:1 ratio, 40 HP, 540 rpm PTO (Optic ax1S), alloy steel gears, cast iron housing, 28 kg. Built for auger drives & post-hole diggers.<\/p>","protected":false},"featured_media":4108,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[2005],"product_tag":[],"class_list":["post-4103","product","type-product","status-publish","has-post-thumbnail","product_cat-pit-digger","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/agriculturalgearboxes.top\/fi\/wp-json\/wp\/v2\/product\/4103","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agriculturalgearboxes.top\/fi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/agriculturalgearboxes.top\/fi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/agriculturalgearboxes.top\/fi\/wp-json\/wp\/v2\/comments?post=4103"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agriculturalgearboxes.top\/fi\/wp-json\/wp\/v2\/media\/4108"}],"wp:attachment":[{"href":"https:\/\/agriculturalgearboxes.top\/fi\/wp-json\/wp\/v2\/media?parent=4103"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/agriculturalgearboxes.top\/fi\/wp-json\/wp\/v2\/product_brand?post=4103"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/agriculturalgearboxes.top\/fi\/wp-json\/wp\/v2\/product_cat?post=4103"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/agriculturalgearboxes.top\/fi\/wp-json\/wp\/v2\/product_tag?post=4103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}