Britool Hallmark Socket Adapters & Universal Joints 1/4" 3/8" 1/2" 3/4" Drive

The Britool Hallmark Socket Adapter and Universal Joint Range provides a professional-quality solution for expanding the versatility of your hand socket collection. Manufactured from high-quality Chrome Vanadium steel, these accessories are designed for strength, durability, and dependable performance in automotive, engineering, and general workshop applications.

The range includes a selection of square drive socket adapters, allowing you to increase or reduce drive sizes between 1/4", 3/8", 1/2", and 3/4" systems. Also available are double-pin universal joints, enabling sockets to reach fasteners positioned at awkward angles or in confined spaces while maintaining smooth torque transfer.

Each item is available individually, making it easy to replace worn components or build your own custom socket accessory kit. A complete 9-piece Socket Adapter & Universal Joint Set (ADUJSET9) is also available for those wanting the full range in a convenient Tool Control foam tray.

Key Features

• Genuine Britool Hallmark quality
• Manufactured from Chrome Vanadium steel
• Professional mirror chrome finish
• Available individually
• Drive size increasing and reducing adapters
• Double-pin universal joints for improved access
• Suitable for automotive and workshop applications
• Complete 9-piece set also available (ADUJSET9)

Available Socket Adapters

• 1/4" Female × 3/8" Male
• 3/8" Female × 1/4" Male
• 3/8" Female × 1/2" Male
• 1/2" Female × 3/8" Male
• 1/2" Female × 3/4" Male
• 3/4" Female × 1/2" Male

(F = Female Drive • M = Male Drive)

Available Universal Joints

• 1/4" Square Drive
• 3/8" Square Drive
• 1/2" Square Drive

Specifications

• Brand: Britool Hallmark
• Material: Chrome Vanadium Steel
• Finish: Mirror Chrome
• Drive Types: 1/4", 3/8", 1/2" & 3/4" Square Drive
• Available Individually: Yes
• Matching 9-Piece Set Available: ADUJSET9

Improve Socket Versatility

Socket adapters allow you to use sockets and accessories with different drive sizes, reducing the need for duplicate tooling. Universal joints provide greater flexibility by allowing sockets to operate at an angle, making them ideal for hard-to-reach fasteners in confined spaces.

Together, these accessories help increase the capability of your existing socket set while maintaining professional performance.

Ideal Applications

Suitable for:

• Automotive servicing
• Mechanical repairs
• Engineering workshops
• Industrial maintenance
• Agricultural machinery
• General workshop use
• Professional technicians
• DIY enthusiasts

Hand Tool Use Only

These socket adapters and universal joints are designed for manual hand tool use only.

Suitable for use with:

• Ratchets
• Breaker bars
• Extension bars
• Torque wrenches
• Speed braces

Not suitable for use with impact wrenches, air tools, cordless impact drivers, pneumatic equipment, or other powered tools. Use with powered equipment may void the manufacturer's warranty.

The Brand

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.