Product Description

20Pc 3/8" Drive Standard & Long Hex / Allen Key Bit Socket Set 3–12mm – Britool Hallmark

Professional 3/8" Drive Hex Bit Socket Set with Standard & Long-Reach Allen Key Bits

• 20-piece 3/8" drive Hex / Allen key bit socket set covering 3mm–12mm
• Includes both 48mm standard and 95mm long-reach hex bit sockets
• Designed for 6-sided internal hex / Allen fasteners
• Durable construction for professional automotive, engineering and workshop use
• Supplied in a precision-cut EVA foam tool control tray

The Britool Hallmark 20Pc 3/8" Drive Standard & Long Hex Bit Socket Set provides a comprehensive selection of metric Allen key socket sizes from 3mm to 12mm.

Combining standard 48mm and long-reach 95mm hex bit sockets, the set gives professional mechanics and technicians the flexibility to work on both easily accessible fasteners and recessed or difficult-to-reach Allen bolts.

Each hex bit is securely fixed into a durable 3/8" drive socket, allowing the set to be used with compatible ratchets, extension bars and other 3/8" drive hand tools.

Standard & Long-Reach Hex Bit Sockets

The set contains two lengths of every included size, giving you 20 individual hex bit sockets:

Standard Hex Bit Sockets – 48mm Overall Length:
3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm

Long Hex Bit Sockets – 95mm Overall Length:
3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm

The longer 95mm versions provide improved reach where standard sockets cannot easily access the fastener.

Designed for Hex / Allen Fasteners

These metric hex bit sockets are designed for loosening and tightening fasteners with an internal 6-sided hexagon recess, commonly referred to as Allen, hex or hexagon socket fasteners.

The comprehensive 3–12mm size range makes the set particularly useful for automotive servicing, mechanical repairs, machinery maintenance, engineering and general workshop applications.

3/8" Square Drive

Each Allen key bit is permanently fitted into a 3/8" square drive socket, making the set compatible with a wide range of 3/8" drive hand tools, including:

• Ratchet handles
• Extension bars
• Breaker bars
• Torque wrenches
• Flexible handles

Please note: These are hand-tool hex bit sockets and should not be used with impact wrenches unless specifically stated otherwise.

EVA Foam Tool Control Storage

All 20 sockets are supplied neatly organised in a precision-cut EVA foam tray.

The foam provides a dedicated position for each socket, making it easy to identify missing tools while keeping the set protected and organised. The tray is ideal for use in toolboxes, top boxes, roll cabs and workshop tool drawers.

Britool Hallmark Quality

Each socket features the distinctive Britool Hallmark "B" logo, providing clear identification and reflecting the professional quality associated with the Britool Hallmark range.

This set is an excellent choice for professional mechanics, automotive technicians, engineers and demanding DIY users who need a comprehensive selection of both standard and extended-reach Allen key sockets.

Technical Specifications

Brand: Britool Hallmark
Product Type: Hex / Allen Key Bit Socket Set
Number of Pieces: 20
Drive Size: 3/8" Square Drive
Fastener Type: Internal Hex / Allen
Size Range: 3mm–12mm
Standard Bit Socket Length: 48mm
Long Bit Socket Length: 95mm
Storage: EVA Foam Tool Control Tray
Measurement System: Metric
Suitable For: Hand tools

Set Contents

10 × 48mm Standard Hex Bit Sockets:
3, 4, 5, 6, 7, 8, 9, 10, 11 & 12mm

10 × 95mm Long Hex Bit Sockets:
3, 4, 5, 6, 7, 8, 9, 10, 11 & 12mm

Typical Applications

Ideal for a wide variety of professional maintenance and repair jobs, including:

• Automotive servicing and repairs
• Engine and mechanical components
• Brake and suspension work
• Motorcycles and bicycles
• Industrial machinery
• Plant and equipment maintenance
• Engineering workshops
• General mechanical assembly

EAN: 5060960271419

View the product video on our YouTube Channel https://www.youtube.com/watch?v=nQicaeefOag

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.