Britool Hallmark 3/8" Drive Extension Bar Range 50-250mm Chrome Vanadium (V3)

The Britool Hallmark 3/8" Drive Extension Bar Range is designed to provide professional-quality performance when additional reach is required for automotive, engineering, and general workshop applications. Manufactured from high-quality Chrome Vanadium steel, these extension bars offer outstanding strength, durability, and dependable performance for everyday professional use.

Featuring a fixed drive design, these extension bars provide a rigid, positive connection between the ratchet and socket, ensuring maximum torque transfer without unwanted movement. Each extension bar is fitted with a spring-ball socket retainer, securely holding sockets in place during use while allowing quick and easy socket changes.

Available in five popular lengths, the range offers excellent versatility for accessing recessed or difficult-to-reach fasteners in engines, machinery, and confined working areas.

Individual extension bars are available separately or as part of the Britool Hallmark SMLES12 12 Piece Mixed Drive Fixed Extension Bar Set. Matching 1/4" and 1/2" drive extension bars are also available, together with corresponding wobble extension bar ranges for improved angled access.

Key Features

• Genuine Britool Hallmark professional quality
• 3/8" square drive fixed extension bars
• Manufactured from high-quality Chrome Vanadium steel
• Fixed design for maximum torque transfer
• Spring-ball socket retainer securely holds sockets
• Ideal for recessed and hard-to-reach fasteners
• Individual lengths available
• Available as part of the SMLES12 mixed drive fixed extension bar set
• Matching 1/4" and 1/2" drive extension bars also available
• Corresponding wobble extension bar ranges available

Available Lengths

Choose from the following lengths:

• 50mm
• 75mm
• 125mm
• 150mm
• 250mm

Professional Performance

The fixed design delivers a rigid, straight drive connection for maximum strength and efficient torque transfer, making these extension bars ideal for applications where wobble movement is not required. The spring-ball retention system keeps sockets securely attached during use while allowing fast socket changes.

Ideal Applications

Suitable for:

• Automotive servicing and repairs
• Mechanical engineering
• Workshop maintenance
• Industrial machinery servicing
• Accessing recessed fasteners
• Tight and restricted working areas
• Professional technicians
• DIY enthusiasts

Complete Your Socket Accessory Collection

These extension bars are available individually or as part of the following Britool Hallmark set:

• SMLES12 – 12 Piece Mixed Drive Fixed Extension Bar Set

Matching 1/4" and 1/2" drive extension bars are also available, together with corresponding wobble extension bar ranges, providing a complete professional socket accessory solution.

Please Note

The product image is for illustration purposes only and may show a different extension bar length. You will receive the length selected when placing your order. Please ensure you choose the correct size before purchasing.

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.