Britool Hallmark 3/8" Drive Impact Socket Set Twin Pack Standard & Deep 6-24mm

Name: Britool Hallmark 3/8" Drive Impact Socket Set Twin Pack Standard & Deep 6-24mm
Brand: Britool Hallmark
SKU: PROM2303
Price: 67.0 GBP
Availability: InStock

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PROM2303

£67.00

£67.00 ~~£132.00~~

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The Britool Hallmark 3/8" Drive Impact Socket Set Twin Pack combines both standard and deep impact sockets in one professional-quality package, providing a comprehensive solution for automotive, engineering, and industrial fastening applications. Manufactured from premium Chrome Molybdenum (Cr-Mo) steel, these sockets are designed to withstand the high torque and repeated shock loads generated by pneumatic impact wrenches, cordless impact tools, and other professional equipment.

Each set includes a full range of 6-point hexagon impact sockets from 6mm to 24mm, giving excellent coverage for the most commonly used metric fasteners. The deep sockets provide additional reach for recessed fasteners and threaded studs, while the standard sockets offer maximum strength for everyday applications.

Featuring Britool's Stress Relief Drive profile, the sockets apply torque to the stronger areas of the fastener rather than the corners, helping to reduce fastener wear and minimise rounding under heavy loads. Precision-machined ball retaining grooves ensure a secure fit on all 3/8" drive accessories, while the cross-drilled retaining hole allows optional use with a pin and ring for additional security on impact tools.

Each set is supplied in its own Tool Control EVA foam tray, allowing both sets to fit neatly into toolbox drawers while keeping every socket organised, protected, and easy to identify. Every socket is laser marked with the Britool Hallmark logo and individual part number for professional tool control. Individual replacement sockets are also available separately if required.

Key Features

Genuine Britool Hallmark quality
Twin pack including both standard and deep impact socket sets
3/8" square drive
Professional 6-point (hexagon) impact sockets
Manufactured from premium Chrome Molybdenum (Cr-Mo) steel
Britool Stress Relief Drive reduces fastener wear
Heat treated for maximum strength and durability
Ball retaining groove for secure socket retention
Cross-drilled retaining hole for optional pin and ring
Suitable for pneumatic, cordless, and impact tools
Laser marked with Hallmark branding and part numbers
Individual replacement sockets available

Set Contents

Both standard and deep socket sets include the following metric sizes:

6mm
7mm
8mm
9mm
10mm
11mm
12mm
13mm
14mm
15mm
16mm
17mm
18mm
19mm
20mm
21mm
22mm
23mm
24mm

Specifications

Brand: Britool Hallmark
Drive Size: 3/8" Square Drive
Socket Type: Standard & Deep Impact Sockets
Profile: 6-Point (Hexagon)
Size Range: 6mm–24mm
Material: Chrome Molybdenum Steel (Cr-Mo)
Finish: Black Impact Finish
Retaining Features: Ball Groove & Pin/Ring Hole
Storage: Two Tool Control EVA Foam Trays

Built for Heavy-Duty Performance

Manufactured for professional use, these impact sockets are engineered to cope with demanding, high-torque applications while maintaining precise fastener engagement. The Stress Relief Drive design improves torque transfer and helps extend both socket and fastener life.

Ideal Applications

Suitable for:

Automotive servicing and repairs
Commercial vehicle maintenance
Engineering workshops
Industrial maintenance
Agricultural machinery
Heavy plant equipment
Professional mechanics
General workshop use

Compatible with all standard 3/8" square drive impact accessories.

Professional Tool Control Storage

Each socket set is supplied in its own precision-cut Tool Control EVA foam tray, allowing quick identification, secure storage, and easy organisation within professional toolbox drawers.

The Brand

The HALLMARK range was developed by Britool in the 80's for the automotive aftermarket. it has been the professional’s choice ever since. Each tool is marked with the Britool hallmark , your guarantee of quality.

The Britool Hallmark guarantee covers against defective materials and/or workmanship when used for the purpose for which they were designed and for the expected life of the tool. In the unlikely event that a product fails during normal use, it will be repaired or replaced. The guarantee does not extend to fair wear & tear, moving parts such as ratchet mechanisms or consumable items such as bits and repair kits.

Weight & Dimensions

Weight: 4 kg

Britool Hallmark 3/8" Drive Impact Socket Set Twin Pack Standard & Deep 6-24mm

£67.00

Frequently Asked Questions

What is included in the Britool Hallmark 3/8" Drive Impact Socket Set Twin Pack?

The Britool Hallmark Impact Socket Twin Pack contains two complete 3/8" drive metric socket sets: one standard-depth set (MHMPSET19) and one deep socket set (MDHMPSET19). Each contains 19 six-point impact sockets from 6mm to 24mm inclusive, giving a total of 38 sockets. Both sets are supplied in their own Tool Control EVA foam storage trays, providing a comprehensive selection for professional automotive and workshop use.

What is the difference between standard and deep impact sockets?

Standard impact sockets have a shorter body, making them useful for general fastening tasks and applications where working space is limited. Deep impact sockets provide additional reach for recessed nuts, longer threaded studs and fasteners that cannot easily be accessed with a standard socket. Having both types in this Britool Hallmark twin pack allows mechanics to select the most suitable socket depth for each application.

Can these Britool Hallmark impact sockets be used with cordless and pneumatic impact wrenches?

Yes. Both sets are manufactured from heat-treated chrome-molybdenum (Cr-Mo) steel and are designed for use with compatible 3/8" square drive cordless and pneumatic impact wrenches. Each socket features a ball retaining groove and cross-drilled hole for optional pin-and-ring retention where appropriate. Always use compatible impact-rated accessories and follow the equipment manufacturer's operating recommendations.

What is Britool Hallmark Stress Relief Drive, and how does it protect fasteners?

Britool Hallmark Stress Relief Drive is a socket profile designed to transfer torque through the stronger areas of a hexagonal fastener rather than concentrating force on its corners. This helps reduce the risk of rounding nuts and bolt heads, particularly during demanding impact applications. Both the standard and deep sockets feature a 6-point hexagonal profile for secure engagement with correctly sized metric fasteners.

Are the Britool Hallmark standard and deep impact socket sets suitable for professional automotive and engineering work?

Yes. The Britool Hallmark 3/8" Drive Impact Socket Twin Pack is designed for professional mechanics, engineering workshops and maintenance technicians. Its 6–24mm metric size range covers many common fasteners used in automotive repairs, commercial vehicle servicing, agricultural machinery and industrial maintenance. The combination of standard and deep sockets provides flexibility when working with both accessible and recessed fasteners.

Can individual sockets be replaced, and how are the two sets stored?

Yes. Individual replacement Britool Hallmark 3/8" Drive Impact Sockets are available separately, allowing lost or damaged sizes to be replaced without purchasing another complete set. Each socket is laser-marked with the Britool Hallmark logo and individual part number to help identify the correct replacement. The twin pack includes two separate Tool Control EVA foam trays, with dedicated storage positions for all 38 sockets to help keep workshop tools organised and identify missing items.