Britool Hallmark 25pc 1/2 Drive Impact Socket Set 12 Point Sizes 8-36mm Cr-Mo

The Britool Hallmark 25 Piece 1/2" Drive 12 Point Impact Socket Set is a professional-quality metric impact socket collection designed for demanding automotive, engineering and industrial workshop applications.

Manufactured from Chromium-Molybdenum (Cr-Mo) steel, these heavy-duty impact sockets are engineered to withstand the repeated shock loading and high-torque demands associated with pneumatic impact wrenches and suitable powered fastening tools.

The set contains 25 metric sockets covering sizes from 8mm to 36mm, providing an extensive selection for professional mechanics, commercial vehicle technicians, maintenance engineers and workshop users.

Each socket features a 12-point bi-hexagon profile, providing multiple engagement positions around a compatible fastener. This can be particularly useful when positioning a socket in restricted areas or working with 12-point fastener heads.

The sockets also feature dual pin-and-ring retention holes, allowing compatible retaining systems to be used where required.

For organised workshop storage, the complete set is supplied in a precision-cut EVA tool control foam tray, measuring approximately 391mm × 190mm × 34mm.

The foam tray is designed for convenient placement in suitable toolbox and roll-cab drawers, helping keep sockets organised, accessible and easy to identify.

Each socket is laser etched with the Britool Hallmark logo and individual part reference, making it easier to identify the correct tool and source individual replacements when required.

This set is particularly suited to workshops that require a comprehensive range of professional 1/2" drive metric bi-hexagon impact sockets in a compact, organised storage format.

Key Features

• Genuine Britool Hallmark professional impact sockets
• Complete 25-piece metric impact socket set
• 1/2" square drive
• 12-point bi-hexagon socket profile
• Metric sizes from 8mm to 36mm
• Manufactured from Chromium-Molybdenum (Cr-Mo) steel
• Designed for heavy-duty impact applications
• Suitable for compatible pneumatic impact wrenches
• Suitable for compatible cordless and electric impact wrenches
• Designed to withstand repeated impact loading
• Dual pin-and-ring retention holes
• Compatible with suitable socket retention systems
• Pin and retaining ring not included
• Laser-etched Britool Hallmark branding
• Individual socket part references
• Professional workshop construction
• Supplied in a precision-cut EVA tool control foam tray
• Foam tray dimensions 391mm × 190mm × 34mm
• Suitable for compatible toolbox and roll-cab drawers
• Individual replacement sockets available separately
• Matching deep and 6-point impact socket sets available separately

Complete 25-Piece Metric Socket Sizes

The Britool Hallmark 1/2" Drive 12 Point Impact Socket Set contains the following 25 metric socket sizes:

• 8mm
• 9mm
• 10mm
• 11mm 
• 12mm
• 13mm 
• 14mm
• 15mm
• 16mm
• 17mm 
• 18mm
• 19mm
• 20mm
• 21mm
• 22mm
• 23mm
• 24mm
• 25mm
• 26mm 
• 27mm
• 28mm
• 29mm
• 30mm
• 32mm
• 36mm

Total: 25 Impact Sockets

All sockets feature a 1/2" square drive and 12-point bi-hexagon profile.

The set includes consecutive metric sizes from 8mm to 30mm, together with 32mm and 36mm.

Chromium-Molybdenum Steel Construction

The sockets are manufactured from Chromium-Molybdenum steel, commonly referred to as Cr-Mo steel.

Cr-Mo is widely used in professional impact socket manufacture because of its suitability for tools subjected to repeated shock loading.

Impact sockets must withstand different operating conditions from conventional chrome hand sockets.

When used with an impact wrench, the socket experiences rapid torque pulses and repeated mechanical impacts.

The Cr-Mo construction is intended to provide the toughness and durability required for these applications.

This makes the Britool Hallmark set suitable for professional workshops using pneumatic, cordless and electric impact equipment.

Always ensure that the impact wrench, socket and any connecting accessories are correctly rated for the intended application.

12-Point Bi-Hexagon Socket Profile

Every socket in this set features a 12-point bi-hexagon profile.

A 12-point socket provides twelve engagement positions around the fastener, allowing the socket to be repositioned in smaller angular increments than a conventional 6-point design.

This can be useful when access is restricted or when working with fasteners that require a 12-point profile.

The bi-hexagon design is suitable for correctly sized compatible fasteners, including appropriate hexagonal and 12-point heads.

The additional engagement positions can make socket positioning more convenient in certain workshop applications.

However, socket profile selection should always take account of the fastener type, condition and torque requirements.

For damaged, heavily corroded or rounded hexagonal fasteners, a suitable 6-point impact socket may provide a more appropriate engagement profile.

1/2" Square Drive – Professional Impact Tool Compatibility

All 25 sockets feature a 1/2" square drive.

This drive size is widely used in automotive workshops, vehicle servicing facilities and mechanical engineering applications.

The sockets are designed for use with compatible impact tools, including:

• 1/2" drive pneumatic impact wrenches
• 1/2" drive cordless impact wrenches
• 1/2" drive electric impact wrenches
• Suitable manually operated 1/2" drive tools

The sockets are suitable for a broad range of fastening tasks where impact-rated tooling is required.

When using impact equipment, ensure the socket is correctly fitted to the square drive and secured using an appropriate retention system where necessary.

Do not use damaged or incorrectly fitting sockets.

Dual Pin-and-Ring Retention Holes

The Britool Hallmark impact sockets incorporate dual pin-and-ring retention holes.

These holes allow the sockets to be secured to compatible impact wrench anvils using an appropriate retaining pin and ring system.

Positive retention can be particularly important when using impact equipment in demanding workshop conditions.

The dual-hole arrangement provides options for alignment with suitable retaining systems.

Please note: Retaining pins and rings are not included with this socket set.

Where the impact wrench manufacturer specifies a particular socket retention arrangement, the correct components must be used.

Never operate an impact tool with an insecurely fitted socket.

Precision-Cut EVA Tool Control Foam Tray

The complete 25-piece socket set is supplied in a precision-cut EVA foam tray.

Each socket has its own dedicated storage position, allowing the tools to be kept organised and readily accessible.

The foam insert is particularly useful for professional workshops where efficient tool identification and inventory control are important.

The organised layout also helps technicians identify missing sockets before completing a job.

Foam Tray Dimensions

• Length: 391mm
• Depth: 190mm
• Height: 34mm

These compact dimensions make the tray suitable for installation in many professional toolbox and roll-cab drawers.

Always check your toolbox drawer dimensions before purchasing to confirm compatibility.

The EVA tray is intended to provide organised storage and tool control, rather than impact protection during tool operation.

Laser-Etched Britool Hallmark Identification

Each socket is laser etched with the Britool Hallmark logo and its individual part reference.

These markings make it easier to identify the sockets and select the correct tool during workshop use.

Individual part references are particularly useful when sourcing replacement sockets.

The distinctive Britool Hallmark identification also helps distinguish these professional tools from unbranded or generic impact sockets.

The sockets are designed to complement other tools within the Britool Hallmark professional workshop range.

Individual Replacement Sockets Available

Individual sockets from the Britool Hallmark impact socket range are available separately, subject to stock.

This allows professional workshops to replace a missing, damaged or worn socket without necessarily purchasing another complete 25-piece set.

It is also useful for mechanics who require additional quantities of frequently used metric sizes.

When purchasing individual replacements, ensure that the required socket has the correct:

• Metric size
• 1/2" square drive
• 12-point bi-hexagon profile
• Impact-rated construction
• Compatible Britool Hallmark part reference

Matching Britool Hallmark Impact Socket Sets

Britool Hallmark also offers complementary impact socket sets for workshops requiring different socket depths or profiles.

Britool Hallmark 1/2" Drive Deep 12 Point Impact Socket Set

Reference: LDBMPSET836

A corresponding deep 12-point bi-hexagon impact socket set, suitable for applications where additional socket reach is required.

Britool Hallmark 1/2" Drive Standard 6 Point Impact Socket Set

Reference: LHMPSET836

A standard-depth 6-point hexagon impact socket set, providing an alternative profile for compatible hexagonal fasteners.

Britool Hallmark 1/2" Drive Deep 6 Point Impact Socket Set

Reference: LDHMPSET836

A deep-profile 6-point hexagon impact socket set, combining additional reach with a six-point fastener engagement design.

These matching sets allow workshops to build a broader collection of professional Britool Hallmark impact tooling.

All alternative sets are available separately and are not included in this 25-piece set.

Professional Automotive and Industrial Applications

The Britool Hallmark 25-Piece 12 Point Impact Socket Set is suitable for:

• Professional automotive workshops
• Vehicle servicing and repairs
• Commercial vehicle maintenance
• Suspension and chassis work
• Engine and transmission servicing
• Mechanical engineering
• Industrial machinery maintenance
• Agricultural machinery servicing
• Plant equipment maintenance
• Fleet maintenance workshops
• Heavy-duty mechanical assembly
• Professional pneumatic impact tool applications
• Cordless impact wrench applications
• Workshop tool control systems
• Toolbox and roll-cab storage

Always select the correct socket size and profile for the fastener and follow the relevant equipment manufacturer's tightening procedures.

Technical Specifications

• Brand: Britool Hallmark
• Product type: Metric Impact Socket Set
• Number of pieces: 25
• Drive size: 1/2" square drive
• Socket profile: 12 Point Bi-Hexagon
• Measurement system: Metric
• Socket depth: Standard
• Material: Chromium-Molybdenum Steel (Cr-Mo)
• Impact rated: Yes
• Suitable for pneumatic impact wrenches: Yes, with compatible equipment
• Suitable for cordless impact wrenches: Yes, with compatible equipment
• Socket retention: Dual pin-and-ring holes
• Retaining pins included: No
• Retaining rings included: No
• Individual socket markings: Laser-etched Britool Hallmark logo and part reference
• Smallest socket size: 8mm
• Largest socket size: 36mm
• Included metric sizes: 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 32 and 36mm
• Storage type: EVA tool control foam tray
• Foam tray length: 391mm
• Foam tray depth: 190mm
• Foam tray height: 34mm
• Individual replacement sockets: Available separately
• Corresponding deep 12-point set: LDBMPSET836
• Corresponding standard 6-point set: LHMPSET836
• Corresponding deep 6-point set: LDHMPSET836
• Primary applications: Automotive, engineering and industrial impact fastening

About Britool Hallmark

Britool has a long history in professional hand tool manufacturing, dating back to 1908.

During the 1980s, Britool developed the Hallmark range specifically for the professional automotive aftermarket.

The range was created to provide mechanics and workshop technicians with professional-quality tools carrying a distinctive hallmark of identification.

Britool Hallmark tools are recognised by their Hallmark branding and B logo, reflecting the range's long-standing association with professional automotive tooling.

The Britool Hallmark product range includes sockets, ratchets, spanners, screwdrivers, impact tools and specialist workshop equipment.

The 25-Piece 1/2" Drive 12 Point Impact Socket Set continues this professional workshop focus, combining Cr-Mo construction, impact-rated performance and practical EVA tool control storage.

Britool Hallmark Guarantee

The Britool Hallmark guarantee covers qualifying defects in materials and workmanship when tools are used for their intended purpose and within their expected usable life.

Where a qualifying manufacturing or material defect is identified, repair or replacement may be provided in accordance with the applicable guarantee terms and conditions.

The guarantee does not generally cover:

• Fair wear and tear
• Misuse or incorrect application
• Damage caused by excessive force or overloading
• Use with unsuitable or incompatible equipment
• Moving components subject to wear
• Consumable items
• Replacement bits
• Repair kits and excluded service components

Impact sockets should always be used with correctly rated equipment and inspected regularly for signs of wear or damage.

Full Britool Hallmark guarantee terms and conditions apply.

These terms do not affect applicable statutory consumer rights.

Important Information

• Genuine Britool Hallmark 25-Piece Impact Socket Set
• 1/2" square drive
• 12-point bi-hexagon profile
• 25 metric sockets covering 8mm to 36mm
• Manufactured from Chromium-Molybdenum (Cr-Mo) steel
• Designed for pneumatic and compatible powered impact tools
• Impact rated
• Dual pin-and-ring retention holes
• Retaining pins and rings are not included
• Laser-etched Britool Hallmark identification
• Supplied in a precision-cut EVA foam tray
• Foam tray dimensions: 391mm × 190mm × 34mm
• Check toolbox drawer dimensions before ordering
• Individual sockets available separately
• Matching LDBMPSET836 deep 12-point set available separately
• Matching LHMPSET836 standard 6-point set available separately
• Matching LDHMPSET836 deep 6-point set available separately
• Always select the correct metric size and socket profile
• Ensure the socket is fully engaged with the fastener
• Use the appropriate socket retention method for the impact wrench
• Inspect sockets regularly for cracks, deformation or excessive wear
• Do not use damaged impact sockets
• Follow the equipment manufacturer's torque and operating instructions
• This listing is for one complete Britool Hallmark 25-Piece 1/2" Drive 12 Point Metric Impact Socket Set, supplied in its EVA tool control foam tray.