Elora Metric and Imperial Socket Set, 3/4" Sq. Dr. (31 Piece)

The Elora 31-Piece Metric and Imperial Socket Set, 3/4" Square Drive (770-S22 MAU) is a professional-grade heavy-duty dual-system socket set engineered for the substantial fastener work that defines HGV, commercial vehicle, agricultural, plant, marine, and heavy engineering workshops. Combining 11 metric bi-hexagon sockets covering 19mm to 50mm with 11 imperial bi-hexagon sockets covering 3/4" to 2" AF, a robust 32-tooth reversible ratchet, three extension bars (100mm, 200mm, and 400mm), sliding T-bar, flexible handle, universal joint, and two drive converters, the 770-S22 MAU is built to handle serious heavy-duty fastener work in both fastener systems.

Manufactured from chrome vanadium steel — hardened, tempered, and chrome plated — and supplied in a heavy-gauge steel storage case, the 770-S22 MAU represents the kind of professional-grade heavy-duty tooling that earns its place in serious workshops and stays there for decades.

The 3/4" Drive Heavy-Duty Sweet Spot

The 3/4" square drive format sits in the heavy-duty sweet spot between standard workshop 1/2" drive and the largest industrial 1" drive. It provides the substantial torque capacity needed for heavy commercial, agricultural, and industrial fasteners — without the size, weight, and unwieldiness of full 1" drive equipment for fasteners that don't quite need it.

For the bulk of HGV, commercial vehicle, agricultural, and plant fastener work that falls above the practical capacity of 1/2" drive but below the largest 1" drive applications, 3/4" drive is the natural choice — and the 770-S22 MAU delivers it with Elora's signature German-engineered quality.

The Dual-System Advantage

Workshops handling heavy commercial, agricultural, and industrial equipment regularly face both metric and imperial fasteners:

• Modern European HGVs and commercial vehicles — generally metric
• American HGVs and equipment — generally imperial AF
• Modern European agricultural machinery — generally metric
• American agricultural machinery (John Deere, Case, etc.) — generally imperial AF
• Modern plant equipment — mixed depending on origin
• Vintage and aged equipment — frequently imperial
• Marine workshops — depending on vessel origin

The 770-S22 MAU eliminates the compromise of trying to handle both systems with single-system equipment. With genuine professional-quality coverage of both metric and imperial in a single kit, the set is genuinely ready for whatever the workshop throws at it.

Built to the Elora Standard

Elora has been manufacturing professional-quality hand tools in Germany since 1924, and the brand is synonymous with the build quality and precision that serious trade users demand. The 770-S22 MAU is manufactured to recognised international standards:

• DIN 3120 / ISO 1174 — socket drive square specification
• DIN 3122 / ISO 3315 — hand-operated socket wrench specification
• DIN 3123 / ISO 3316 — extension bar specification
• DIN 3124 / ISO 2725 — universal joint specification

For tools handling the substantial torque levels of 3/4" drive heavy work, this kind of manufacturing certification matters significantly — both for performance and for operator safety.

Chrome Vanadium Steel Construction

The 770-S22 MAU is built around chrome vanadium steel — the standard alloy for high-quality hand tools because of its excellent combination of strength, toughness, and durability. Every socket and accessory is:

• Hardened to provide the wear resistance needed for repeated heavy use under high torque
• Tempered to deliver the toughness that prevents brittle failure when the going gets tough
• Chrome plated for outstanding corrosion resistance and a long-lasting professional finish

At 3/4" drive working torque levels, the quality of the steel and the precision of the manufacturing matter significantly — both for reliable performance and for safe operation. The 770-S22 MAU's chrome vanadium construction is built for the demands of serious heavy-duty work.

Bi-Hexagon Sockets for Real-World Performance

All 22 sockets in the 770-S22 MAU are bi-hexagon (12-point) design — providing significant advantages for heavy fastener work:

• Better access angles — engagement at 12 positions means just 30° of arc between positions, particularly valuable on the often awkward access locations of heavy fasteners on commercial vehicles and machinery
• Easier fitment on weathered or damaged fasteners — commercial vehicle and agricultural fasteners are frequently corroded, painted over, or partially damaged. The 12-point engagement often allows the socket to grip where a 6-point socket would slip
• Compatibility with both hexagon and 12-point fasteners

Elora's precise manufacturing ensures the bi-hexagon design grips fasteners properly under the high torque levels typical of 3/4" drive work.

Comprehensive Metric Coverage: 19–50mm

The metric side of the 770-S22 MAU offers 11 bi-hexagon sockets covering the heavy-duty metric fastener range:

11 x Metric Bi-Hexagon Sockets: 19, 22, 24, 27, 30, 32, 36, 38, 41, 46, 50mm

This range starts where 1/2" drive comfort ends and extends to the substantial 50mm fasteners found on heavy commercial vehicle and agricultural applications. Key sizes like 32mm and 41mm are widely used on HGV wheel nuts, while the 36, 38, 46, and 50mm sizes cover hub and axle fasteners on commercial vehicles, tractors, and plant equipment.

Comprehensive Imperial Coverage: 3/4" to 2" AF

The imperial side of the 770-S22 MAU offers 11 bi-hexagon sockets covering the heavy-duty imperial fastener range:

11 x Imperial Bi-Hexagon Sockets: 3/4, 7/8, 15/16, 1, 1.1/16, 1.1/4, 1.7/16, 1.1/2, 1.5/8, 1.13/16, 2" AF

This range covers the substantial imperial fasteners found on American HGVs, American agricultural machinery, American plant equipment, and aged or specialist equipment. The 2" AF top size is particularly valuable for the largest commercial fasteners encountered in heavy industrial work.

Comprehensive Heavy-Duty Accessory Pack

The 770-S22 MAU includes an unusually comprehensive accessory selection for a heavy-duty set — significantly enhancing its practical versatility:

• 32-Tooth Reversible Ratchet — built to handle the substantial torque levels of 3/4" drive work
• 100mm Extension Bar — for moderate access
• 200mm Extension Bar — for deeper recessed access
• 400mm Extension Bar — for the deepest access on hub, wheel, and structural applications
• Sliding T-Bar — for balanced two-handed leverage on tight fasteners
• Flexible Handle — for awkward-angle access where straight handles can't operate
• Universal Joint — for accessing fasteners at angles where straight drive can't reach
• 3/4" (F) x 1/2" (M) Drive Converter — allows the 770-S22 MAU's 3/4" ratchet and accessories to drive 1/2" drive sockets, extending versatility downward
• 3/4" (F) x 1" (M) Drive Converter — allows 1" drive sockets to be used with the 770-S22 MAU's accessories, extending versatility upward

The inclusion of two drive converters (down to 1/2" and up to 1") is particularly valuable — it makes the 770-S22 MAU the connecting hub of a larger socket system. A workshop with 1/2", 3/4", and 1" drive sockets gains significant flexibility in matching the right socket size to each job, with the 770-S22 MAU's accessories able to drive any of the three drive sizes via the converters.

Heavy-Gauge Steel Storage Case

The 770-S22 MAU is supplied in a heavy-gauge steel storage case — the proper presentation for substantial heavy-duty tools. The case provides genuine protection during transport and storage, important for tools of this size and value, and the steel construction stands up to the realities of heavy workshop and yard environments.

Ideal Applications

The 3/4" drive format combined with comprehensive metric AND imperial coverage and the versatile accessory pack make the 770-S22 MAU perfectly suited to a wide range of heavy-duty fastener work:

• HGV and bus workshops — wheel nuts, hub fasteners, large structural bolts
• Mixed-fleet commercial vehicle workshops — European and American vehicles
• Agricultural workshops — modern (metric) and American (imperial) tractors and equipment
• Plant maintenance — mixed-origin excavators, loaders, dumpers, scrapers
• Construction equipment maintenance — heavy machinery fastener work
• Marine workshops — handling vessels of varying origins
• Industrial maintenance — substantial machinery from multiple sources
• Wind energy maintenance — turbine component fasteners
• Rail and infrastructure — heavy structural and component fasteners
• Heavy engineering and fabrication — substantial structural bolting
• Mobile heavy mechanic operations — comprehensive portable heavy-duty toolkit

A core piece of equipment for HGV workshops, bus depots, mixed-fleet commercial vehicle operations, agricultural service operations handling both European and American machinery, plant maintenance facilities, marine workshops, industrial maintenance teams, and any operation where heavy fasteners in both systems are part of daily work.

Contents Summary

Product Specifications

Important Notes on Use

The 770-S22 MAU is engineered for heavy-duty commercial vehicle, agricultural, plant, and industrial fastener work where the substantial torque capacity of 3/4" drive is required. For ultimate torque applications (such as final tightening of HGV wheel nuts to manufacturer specifications), use of a calibrated torque wrench compatible with 3/4" drive is recommended to ensure correct fastener tension.

When working with large fasteners under high torque, always follow proper safety procedures: ensure secure footing and body position, anticipate the direction of fastener movement, use appropriate PPE including eye protection, and never use damaged or worn sockets at high torque levels. The 770-S22 MAU's chrome vanadium construction provides exceptional strength, but no socket is designed to handle damage to the engagement surfaces.

Why Choose the Elora 770-S22 MAU?

For workshops handling heavy-duty fastener work across both metric and imperial systems — HGVs, buses, mixed-fleet commercial vehicles, agricultural machinery, plant equipment, marine, or heavy industrial applications — the Elora 770-S22 MAU is the right tool for the job. The 3/4" drive format provides the substantial torque capacity that heavy commercial and industrial fasteners demand. The dual-system coverage eliminates the compromise of trying to handle vehicles and equipment of varying origins with single-system equipment. The chrome vanadium construction delivers the strength, durability, and corrosion resistance that years of heavy professional use require. The bi-hexagon socket design provides better access angles and improved engagement on real-world fasteners — particularly valuable on weathered commercial vehicle and agricultural components.

The comprehensive accessory pack — three extension bars (100mm, 200mm, 400mm), flexible handle, universal joint, sliding T-bar, and two drive converters — turns this from a simple socket set into the connecting hub of a complete heavy-duty drive system. The two drive converters (down to 1/2" and up to 1") are particularly valuable, providing seamless integration with workshops that have sockets in adjacent drive sizes.

The DIN/ISO manufacturing standards aren't just marketing — they're certification that this is a tool set built and tested to the specifications required for safe operation at the torque levels 3/4" drive work involves. Combined with Elora's reputation for German engineering quality dating back to 1924, the 770-S22 MAU is a tool set built for the long haul of serious heavy-duty professional use.

Whether you're equipping an HGV workshop, a bus depot, a mixed-fleet commercial vehicle operation, an agricultural service facility handling both European and American machinery, a plant maintenance team, a commercial marine workshop, or any operation where heavy fasteners in both systems are part of daily life, the Elora 770-S22 MAU delivers the professional-quality, German-engineered heavy-duty dual-system tool capability that serious work demands.

Order the Elora 31-Piece Metric and Imperial Socket Set, 3/4" Sq. Dr. (770-S22 MAU) today and add genuine professional-quality heavy-duty dual-system socket capability to your workshop.