• A set of 20 standard and long allen keys in 3/8" drive sockets. Sizes 3 to 12mm, presented in a red and black EVA foam tray for easy storage in a toolbox drawer.
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Britool Hallmark

20Pc 3/8" Hex/Allen Bit Socket Set Std & Long + 28Pc Torx/Hex/Spline Set

20Pc 3/8" Hex/Allen Bit Socket Set Std & Long + 28Pc Torx/Hex/Spline Set

PROM26104 - M2BSET20 + S1BSET28

£67.00
£111.61 £67.00
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Product FAQs

Frequently Asked Questions

Are both sets included in the advertised price?

Yes. This special promotional price includes both the 20-piece standard and long Hex bit socket set and the 28-piece Torx, Hex and Spline bit socket set, offering better value than purchasing them separately.

What is the advantage of having standard and long Hex bit sockets?

The 48mm standard sockets are ideal for general use, while the 95mm long versions provide additional reach for recessed or difficult-to-access Allen bolts.

What drive sizes are included?

The 20-piece Hex set uses a 3/8" square drive, while the 28-piece Torx, Hex and Spline set uses a 1/4" square drive.

What are Spline (XZN) bit sockets used for?

Spline sockets are designed for specialist multi-spline fasteners commonly found in automotive and engineering applications, including certain engine, transmission and mechanical components.

Are these sockets suitable for impact wrenches?

No. These are hand-tool bit sockets designed for use with compatible ratchets, extension bars and other manual drive tools. They should not be used with impact wrenches unless specifically rated for impact use.

Are the bits fixed into the sockets?

The 28-piece Torx, Hex and Spline set features fixed S2 steel bits. The 20-piece Hex set also has bits securely fitted into the socket bodies.

Is the 20-piece Hex set supplied in a foam tray?

Yes. The 20-piece standard and long Hex bit socket set is supplied in a precision-cut EVA foam tray for organised storage in professional tool cabinets and workshop drawers.

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Product Description

Britool Hallmark 20Pc Hex Bit Socket Set 3–12mm + 28Pc Torx, Hex & Spline Set

SPECIAL COMBINATION OFFER – BUY BOTH PROFESSIONAL BIT SOCKET SETS TOGETHER AT A REDUCED PACKAGE PRICE!

Get two professional Britool Hallmark bit socket sets at a special combined price. This 48-piece package includes a 20-piece 3/8" drive standard and long Hex (Allen) bit socket set covering 3–12mm, PLUS a 28-piece 1/4" drive Torx, Hex and Spline (XZN) bit socket set.

Ideal for professional mechanics, automotive workshops and engineers requiring a comprehensive selection of specialist bit sockets for everyday servicing and repairs.

Key Features & Benefits

20Pc Standard & Long Hex (Allen) Bit Socket Set – 3–12mm

Professional 3/8" square drive Hex (Allen) bit sockets.

Includes 10 standard-length 48mm bit sockets covering 3–12mm.

Includes 10 extra-long 95mm bit sockets covering 3–12mm.

Precision-machined 6-sided Hex profiles for secure engagement with Allen fasteners.

Two socket lengths provide improved access to recessed and difficult-to-reach bolts.

Compatible with standard 3/8" drive ratchets, extension bars and other suitable hand tools.

Supplied in a precision-cut EVA tool control foam tray for organised workshop storage.

PLUS 28Pc Torx, Hex & Spline Bit Socket Set

Professional 1/4" square drive bit socket set featuring three popular fastener profiles.

Includes 10 Hex (Allen) bit sockets covering 2–12mm.

Includes 12 Torx (Star) bit sockets covering T6–T40.

Includes 6 Spline (XZN) bit sockets covering M4–M10.

Manufactured with high-quality S2 steel bits for strength, durability and wear resistance.

Fixed bit construction provides secure engagement between the bit and socket.

Compact 37mm overall length for improved access in confined spaces.

Ideal for precision automotive repairs, mechanical servicing and general workshop use.

Sizes Included

20Pc Standard & Long Hex Bit Socket Set

3/8" Drive – Standard Length (48mm):

3, 4, 5, 6, 7, 8, 9, 10, 11 and 12mm.

3/8" Drive – Long Length (95mm):

3, 4, 5, 6, 7, 8, 9, 10, 11 and 12mm.

28Pc Torx, Hex & Spline Bit Socket Set

1/4" Drive Hex (Allen) – 10 Sizes:

2, 2.5, 3, 4, 5, 6, 7, 8, 10 and 12mm.

1/4" Drive Torx (Star) – 12 Sizes:

T6, T7, T8, T9, T10, T15, T20, T25, T27, T30, T35 and T40.

1/4" Drive Spline (XZN) – 6 Sizes:

M4, M5, M6, M8, M9 and M10.

Overall Socket Length: 37mm.

Professional Quality & Construction

The 20-piece Hex bit socket set provides a comprehensive range of metric Allen sizes in both standard and extended lengths, making it ideal for applications where access and reach are important.

The additional 28-piece Torx, Hex and Spline set features durable S2 steel bits and compact 1/4" drive sockets, providing a versatile solution for smaller fasteners and specialist automotive applications.

Together, these two sets offer an extensive selection of three popular fastener profiles, reducing the need to purchase multiple individual bit sockets.

Applications

Automotive servicing, maintenance and repairs.

Engine, gearbox and transmission work.

Brake, suspension and steering system repairs.

Motorcycle and bicycle maintenance.

Torx, Hex and Spline fasteners on modern vehicles.

Industrial machinery and mechanical assembly.

Recessed Allen bolts and restricted-access fasteners.

Professional garages, mobile mechanics and engineering workshops.

Technical Specifications

Brand: Britool Hallmark

Total Pieces: 48 (20 Hex + 28 Torx, Hex & Spline)

Main Set Drive Size: 3/8" Square Drive

Additional Set Drive Size: 1/4" Square Drive

Bit Profiles: Hex (Allen), Torx (Star) and Spline (XZN)

Main Set Hex Sizes: 3–12mm

Standard Hex Socket Length: 48mm

Long Hex Socket Length: 95mm

Additional Set Hex Sizes: 2–12mm

Additional Set Torx Sizes: T6–T40

Additional Set Spline Sizes: M4–M10

Additional Set Socket Length: 37mm

Additional Set Bit Material: S2 Steel

Main Set Storage: EVA Tool Control Foam Tray

Measurement System: Metric

Tool Compatibility: Suitable Hand Tools – Not Intended for Impact Wrenches

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. 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 or moving parts such as ratchet mechanisms.