3/8"SD Hexagon Deep (6 Point) Socket from Britool Hallmark - MDHM range (V3)

The Britool Hallmark MDHM 3/8" Drive Deep 6 Point Socket Range (V3) delivers precision, durability, and professional performance for demanding workshop and mechanical applications. Forged from premium alloy steel, these sockets are engineered to withstand rigorous daily use while maintaining their shape and reliability under high torque loads.

Each socket features a 6-point hexagonal design for accurate engagement with 3/8" drive components. Ball retention grooves on the square drive faces ensure a secure fit with all compatible accessories, preventing slippage during use. Britool’s Stress Relief Drive system helps protect fasteners and allows higher torque application without compromising tool integrity.

Finished in a high-polished chrome mirror finish, every socket is stamped with the modern “The Marque of Skill” branding alongside the iconic Hallmark logo, reflecting Britool’s commitment to quality and professional standards.

Sizes available: 6mm to 24mm (deep depth), with standard depth socket versions also available for standard fasteners.

A trusted choice for professionals seeking precision, strength, and long-lasting reliability in a comprehensive socket range.

Available as part of a 38 piece socket and accessory set - MSET38. Or a 38 piece standard and deep socket set - MSDSET38

Please note picture may be of a different size but you will receive the size you order.

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.