Product Description
3/4" Drive Heavy Duty Breaker Bar – 900mm | Britool Hallmark
Professional 900mm Breaker Bar for High-Torque Applications
The Britool Hallmark 3/4" Drive Heavy Duty Breaker Bar is engineered for demanding applications where maximum leverage and strength are required. With an impressive 900mm overall length, this professional power bar provides the leverage needed to loosen seized, rusted, overtightened and stubborn nuts and bolts.
Featuring a robust hinged 3/4" drive knuckle, the breaker bar uses a heavy-duty head design developed to withstand substantially higher torque loads than many conventional breaker bars. It is ideal for commercial vehicle maintenance, HGV workshops, agricultural machinery, plant equipment and heavy engineering applications.
Key Features
- 3/4" square drive for use with compatible heavy-duty sockets
- 900mm overall length for increased leverage and high torque
- Heavy-duty hinged knuckle head designed for demanding applications
- Stronger head construction than traditional twin-ear breaker bar designs
- Manufactured from high-quality Chrome Vanadium (Cr-V) steel
- Ideal for loosening seized, rusted and stubborn fasteners
- Suitable for professional automotive, HGV, agricultural and industrial use
- Replaceable knuckle repair kit available – XP900HD/RK
Heavy-Duty Breaker Bar Head Design
Traditional breaker bars commonly secure the drive knuckle between two supporting ears using a retaining screw or pin. Under excessive loads, this area can become a potential point of failure.
The Britool Hallmark heavy-duty design uses a more substantial head and knuckle arrangement, providing greater strength for applications where exceptionally high levels of leverage and torque may be required.
This makes the bar particularly suitable for professionals regularly working with large fasteners, wheel nuts and heavy machinery.
900mm Length for Maximum Leverage
At 900mm long, this 3/4" drive breaker bar provides considerably more leverage than shorter power bars. The extended handle allows greater torque to be applied with less effort, helping tackle fasteners that may be difficult to release with a standard ratchet or shorter breaker bar.
Chrome Vanadium Steel Construction
Manufactured from high-quality Chrome Vanadium steel, the breaker bar is designed to provide the strength, durability and reliability required for regular professional workshop use.
Technical Specifications
Brand: Britool Hallmark
Tool Type: Heavy Duty Breaker Bar / Power Bar / Knuckle Bar
Drive Size: 3/4" Square Drive
Overall Length: 900mm
Head Type: Heavy-duty hinged knuckle
Material: Chrome Vanadium Steel
Repair Kit: XP900HD/RK
Application: High-torque manual fastening and loosening
Typical Applications
This 900mm 3/4" drive breaker bar is particularly suited to:
- HGV and commercial vehicle maintenance
- Truck and trailer repairs
- Agricultural machinery
- Plant and construction equipment
- Heavy automotive repairs
- Industrial machinery maintenance
- Large wheel nuts and high-torque fasteners
- Seized or heavily tightened nuts and bolts
Compatibility
Designed for use with 3/4" drive sockets and accessories suitable for manual high-torque applications.
Always ensure the socket and any accessories being used are rated appropriately for the load being applied.
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.