Britool Hallmark 8pc Impact Extension Bar Set MLEPSET - 3/8" & 1/2" Cr-Mo

The Britool Hallmark 8-Piece Impact Extension Bar Set provides professional-grade reach and durability for demanding automotive, mechanical and workshop applications. Manufactured from premium Chrome Molybdenum (Cr-Mo) steel, these impact extension bars are designed to withstand the high torque and shock forces generated by pneumatic and cordless impact tools.

The set combines 3/8" and 1/2" square drive extension bars in a useful range of lengths, providing additional reach when working on recessed, obstructed or difficult-to-access fasteners.

Each extension bar features a spring-ball socket retainer to help securely hold the socket in position during use, reducing the risk of accidental socket release. Each bar is also laser marked with the modern Britool Hallmark branding, individual part reference and size for quick identification.

Supplied in a practical tool control EVA foam tray, the complete set can be neatly stored in a toolbox, roll cab or workshop drawer, keeping each extension bar organised and readily accessible.

Key Features

• Genuine Britool Hallmark professional impact extension set
• 8-piece mixed drive set
• 3/8" and 1/2" square drives
• Manufactured from Chrome Molybdenum (Cr-Mo) steel
• Designed for use with impact and powered tools
• Spring-ball socket retainers
• Laser-marked Hallmark branding
• Individual part references and sizes marked on each bar
• Supplied in tool control foam
• Individual extension bars available separately
• Suitable for automotive, mechanical and industrial applications

Set Contents

3/8" Drive

• 50mm
• 100mm
• 175mm
• 250mm

1/2" Drive

• 75mm
• 125mm
• 200mm
• 300mm

Total: 8 extension bars

Individual extensions from the set are also available separately when replacements or additional lengths are required.

Specifications

Brand: Britool Hallmark

Tool Type: Impact Extension Bar Set

Material: Chrome Molybdenum Steel

Drive Sizes: 3/8" & 1/2"

Number of Pieces: 8

Retention: Spring-ball socket retainer

Application: Impact / powered tool use

Storage: Tool control EVA foam tray

Branding: Laser marked "The Marque of Skill" and Hallmark markings

Professional Applications

Ideal for:

• Automotive servicing
• Engine repairs
• Vehicle maintenance
• Commercial vehicle workshops
• Mechanical engineering
• Industrial maintenance
• Machinery servicing
• Garage workshops
• Professional mechanics
• Restricted-access fastening

The different extension lengths provide greater flexibility when additional reach is required, particularly around engine bays, chassis components, machinery and recessed fasteners.

Why Use Impact Extension Bars?

Impact-rated extension bars allow sockets to reach fasteners that cannot be accessed directly with an impact wrench or ratchet.

The Cr-Mo construction is designed to withstand the shock loads associated with powered impact tools, while the range of 3/8" and 1/2" drive lengths provides useful coverage for both shorter and deeper access requirements.

The spring-ball retaining system helps keep sockets securely attached during operation, making the set a practical addition to a professional impact socket collection.

The Britool Hallmark 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.