3/8"SD Hexagon / 6 Point Profile Deep Impact Socket Range Britool Hallmark (V3)

The Britool Hallmark 3/8" Drive Deep Impact Socket Range is engineered for professional workshops, designed for use with air and power tools. Made from premium Chromium Molybdenum (Cr-Mo) steel and heat treated for maximum durability, these sockets deliver reliable performance under high-torque applications.

Featuring Britool’s Stress Relief Drive system, the sockets allow increased torque while reducing fastener damage. The 6-point hexagon profile ensures a secure grip, preventing rounding and improving torque transfer.

Each socket includes a ball retaining groove for a positive fit with all 3/8" square drive accessories, and a cross-drilled side hole for optional pin-and-ring retention. All sockets are laser marked with the Britool Hallmark logo and part number for easy identification and workshop traceability.

Socket sizes available:
6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm.

Corresponding sizes available in a standard depth if required.

Also available as a 19 piece deep set in a tool control foam - MDHMPSET19

Or a 19 piece standard depth set - MHMPSET19

PLEASE NOTE THAT THIS IS THE V3 VERSION OF THIS SOCKET IF UNSURE WHICH VERSION YOU NEED TO MATCH YOUR RANGE PLEASE CONTACT US. THANKS

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.