Britool Hallmark 20pc 3/8" Hex / Allen Key Bit Socket Set Standard & Long 3-12mm

This comprehensive 20-piece Britool Hallmark 3/8" square drive Allen key bit socket set delivers professional-grade performance for automotive, engineering and maintenance applications. Precision-machined male hex (Allen) bits are securely fixed into durable chrome sockets, offering strength, accuracy and long service life.

The set includes dual length configurations for maximum versatility: standard 48mm and extended 95mm bit sockets. Covering hex sizes from 3mm to 12mm, it accommodates the majority of common fastening requirements. The bits are manufactured from high-quality S2 steel, ensuring excellent wear resistance and dependable torque transfer.

Each socket is stamped with the distinctive Britool “B” hexagon Hallmark logo, confirming authenticity and quality. Designed exclusively for hand tool use, these sockets help prevent fastener damage that can occur when using pneumatic or electric power tools.

Supplied in protective EVA tool control foam, the set remains neatly organised for easy identification and secure storage. Individual replacement sockets are available separately if required.

Sizes included (both 48mm and 95mm lengths):
3, 4, 5, 6, 7, 8, 9, 10, 11 and 12mm.

Individual's are available separately as replacement as and when required.

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, for the expected life of the tool (T's & C's apply). 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 or consumable parts such as bits and repair kits.