Product Description
Britool Hallmark 3/8" Impact Socket Set – Standard & Deep 6-Point (7–22mm) + Impact Adapters
Professional-grade 3/8" drive impact socket set manufactured from premium Chromium-Molybdenum steel for exceptional strength, durability, and long service life. Designed for use with air tools, impact wrenches, and power tools, this set is ideal for automotive, mechanical, and industrial applications.
The comprehensive 16-piece range covers sizes from 7mm to 22mm, including both standard and deep 6-point sockets for maximum versatility when working on recessed or hard-to-reach fasteners.
Each socket features a secure pin-and-ring hole for safe, reliable use under high torque, along with laser-marked Britool Hallmark branding for easy identification and guaranteed authenticity.
Socket Sizes (Standard & Deep):
7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm
Supplied in a durable EVA foam tray to keep your tools organised and protected in toolboxes, roll cabs, or workshop drawers.
PLUS 6pc Impact Adapter Set
Heavy-duty Chrome Molybdenum steel adapters for added versatility across different drive sizes:
- 1/4” x 3/8”M
- 3/8”F x 1/4”M
- 3/8”F x 1/2”M
- 1/2”F x 3/8”M
- 1/2”M x 3/4”F
- 1/2”F x 3/4”M
Built to handle high torque applications, making this a complete solution for professional fastening tasks.
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.