Britool Hallmark XP900HD 3/4 Drive Heavy Duty Breaker Bar Power Bar 900mm

The Britool Hallmark 3/4" Drive Heavy Duty Breaker Bar, also known as a power bar, is a professional-quality, extra-long manual drive tool engineered for demanding automotive, commercial vehicle, agricultural and industrial maintenance applications.

Featuring a substantial 900mm (approximately 35") overall length, this heavy-duty breaker bar provides exceptional leverage for loosening stubborn, overtightened and seized nuts and bolts where conventional ratchet wrenches may not provide sufficient leverage.

Manufactured from high-quality chrome vanadium steel (Cr-V) and heat treated for additional strength, the breaker bar is designed to withstand the demanding loads associated with professional heavy-duty fastening work.

The bar incorporates a 180° flexible head, allowing the drive head to be positioned at different angles relative to the handle. This improves access and allows the operator to select a practical working position when dealing with large fasteners or restricted working areas.

Unlike conventional breaker bars that use a knuckle positioned between two retaining ears and secured by a single screw, this Britool Hallmark model features a reinforced heavy-duty head construction designed to provide increased strength and durability under substantial torque loads.

A spring-loaded retaining ball on the 3/4" square drive helps hold compatible sockets securely in position during operation.

The breaker bar is particularly suited to commercial vehicle maintenance, HGV servicing, agricultural machinery, plant equipment, industrial engineering and other demanding mechanical applications.

The knuckle assembly is classified as a consumable service component, and a dedicated replacement repair kit is available separately under part number XP900/RK.

Key Features

• Genuine Britool Hallmark professional heavy-duty breaker bar
• 3/4" square drive
• Extra-long 900mm / approximately 35" overall length
• Designed for demanding high-torque manual applications
• Manufactured from chrome vanadium steel (Cr-V)
• Heat-treated construction for increased strength and durability
• Reinforced heavy-duty head design
• Head construction designed for increased resistance to failure under high loads
• 180° flexible / pivoting head
• Adjustable head position for improved working access
• Spring-loaded socket retaining ball
• Positive socket retention during operation
• Extended handle provides excellent mechanical leverage
• Suitable for loosening stubborn, overtightened and seized fasteners
• Ideal for HGV, commercial vehicle, agricultural and industrial maintenance
• Suitable for compatible 3/4" drive sockets
• Dedicated XP900/RK replacement knuckle repair kit available separately
• Part of the established Britool Hallmark professional hand-tool range

Extra-Long 900mm Heavy-Duty Design

The principal advantage of this Britool Hallmark breaker bar is its substantial 900mm overall length.

The extended handle provides significantly greater mechanical leverage than a conventional short ratchet or standard-length power bar.

This allows the operator to apply considerable turning force to large or stubborn fasteners without needing to rely on improvised handle extensions.

The long-handle design is particularly useful when working with large fasteners commonly encountered on:

• Heavy commercial vehicles
• HGVs and trucks
• Agricultural machinery
• Plant and construction equipment
• Industrial machinery
• Heavy mechanical assemblies
• Large chassis and suspension components
• Fleet maintenance equipment

The combination of a 3/4" square drive and 900mm handle makes this breaker bar particularly useful for demanding professional applications.

Reinforced Heavy-Duty Head Construction

A major feature of this breaker bar is its reinforced head design.

Many conventional breaker bars use a pivoting knuckle positioned between two ears, with the assembly secured by a single retaining screw.

Under demanding high-torque conditions, this type of construction can place considerable stress on the retaining components.

The Britool Hallmark heavy-duty design uses an alternative reinforced head arrangement, engineered to provide increased strength and durability compared with conventional single-screw knuckle designs.

This makes the tool particularly suitable for professional workshops where breaker bars are regularly used to loosen heavily tightened or stubborn fasteners.

The reinforced design is intended to reduce the likelihood of head failure under demanding operating conditions, provided the tool is used correctly and within its intended limits.

180° Flexible Head

The breaker bar incorporates a 180° pivoting head, allowing the 3/4" square drive to be positioned at different angles relative to the handle.

This provides greater flexibility when accessing fasteners that cannot be approached conveniently with a fixed-head tool.

The pivoting design is particularly useful when working around surrounding components or when the operator needs to reposition the handle for improved clearance and leverage.

The adjustable head also allows the user to select a more comfortable working angle during demanding manual fastening operations.

For maximum control and to reduce unnecessary stress on the pivot mechanism, apply force with the head positioned as close to straight alignment as practical.

3/4" Square Drive

The breaker bar features a full-size 3/4" square drive, making it compatible with suitable 3/4" drive sockets and accessories.

The 3/4" drive format is commonly used for larger fasteners in commercial vehicle, agricultural, industrial and heavy mechanical applications.

It provides a robust drive connection suitable for the substantial manual turning forces associated with heavy-duty maintenance work.

Always use appropriately rated sockets and accessories suitable for the intended load.

Chrome Vanadium Steel Construction

The breaker bar is manufactured from chrome vanadium steel (Cr-V), a material widely used in professional hand tools because of its strength and toughness.

The steel is heat treated to provide additional strength and durability for demanding workshop applications.

This combination of material selection and heat treatment makes the tool suitable for regular professional manual fastening work.

The robust construction is complemented by the reinforced head assembly and substantial 900mm handle.

Spring-Loaded Socket Retaining Ball

The 3/4" square drive incorporates a spring-loaded retaining ball.

This helps hold compatible sockets securely on the drive during normal operation, reducing the likelihood of accidental socket disengagement.

The retaining ball provides positive socket engagement while still allowing sockets to be changed when required.

Always ensure the socket is fully seated and securely retained before applying substantial force.

Designed for Stubborn and Seized Fasteners

Breaker bars are specifically intended to provide additional manual leverage for loosening fasteners that may be difficult to move with a conventional ratchet wrench.

The 900mm Britool Hallmark power bar is particularly useful for:

• Stubborn nuts and bolts
• Overtightened fasteners
• Corroded mechanical fixings
• Large chassis fasteners
• Heavy vehicle suspension components
• Agricultural machinery fixings
• Industrial equipment maintenance
• Other demanding high-torque manual fastening tasks

A breaker bar provides a solid manual drive connection without a ratchet mechanism, making it a suitable choice when substantial loosening force is required.

The tool is not a calibrated torque wrench and should not be used as a substitute for one when a specified tightening torque must be achieved.

XP900/RK Replacement Knuckle Repair Kit

The breaker bar features a serviceable knuckle assembly.

The knuckle end is classified as a consumable component because it is subject to the substantial forces associated with heavy-duty breaker bar use.

A dedicated replacement repair kit is available separately under part number:

XP900/RK – Heavy Duty Breaker Bar Knuckle Repair Kit

This provides a replacement option should the serviceable head components become worn or damaged during normal use.

The repair kit is not included with the breaker bar and must be purchased separately.

Always confirm compatibility before purchasing replacement components.

Professional Applications

The Britool Hallmark 900mm heavy-duty breaker bar is particularly suitable for:

• HGV and truck servicing
• Commercial vehicle maintenance
• Bus and coach workshops
• Agricultural machinery repairs
• Tractor maintenance
• Plant and construction equipment
• Industrial machinery maintenance
• Heavy mechanical engineering
• Fleet maintenance workshops
• Chassis and suspension repairs
• Large mechanical assemblies
• Professional vehicle workshops
• Engineering maintenance departments
• Heavy equipment servicing
• General professional high-torque manual fastening applications

Technical Specifications

• Brand: Britool Hallmark
• Product type: Heavy Duty Breaker Bar / Power Bar
• Drive size: 3/4" square drive
• Overall length: 900mm / approximately 35"
• Handle design: Extra-long heavy-duty
• Material: Chrome vanadium steel (Cr-V)
• Heat treatment: Yes
• Head design: Reinforced heavy-duty pivoting head
• Head movement: 180°
• Socket retention: Spring-loaded retaining ball
• Operation: Manual
• Primary function: High-leverage loosening and tightening of suitable fasteners
• Replacement knuckle repair kit: XP900/RK – Available Separately
• Applications: Commercial vehicle, agricultural, plant, industrial and heavy mechanical maintenance

The Britool Hallmark Range

The Britool Hallmark range was developed by Britool in the 1980s for the automotive aftermarket and has been a long-established choice for professional workshop users.

Each tool carries distinctive Britool Hallmark branding,, providing clear identification and reflecting the professional tooling heritage of the range.

This heavy-duty breaker bar combines the established Britool Hallmark professional tooling heritage with heat-treated chrome vanadium steel construction, a reinforced pivoting head and an extended 900mm handle.

It is designed for demanding professional applications where durability, mechanical leverage and dependable hand-tool performance are essential.

Britool Hallmark Guarantee

The Britool Hallmark guarantee covers defects in materials and/or workmanship when tools are used for the purpose for which they were designed and for their expected service life.

Where a qualifying manufacturing or material defect occurs during normal use, repair or replacement may be available in accordance with the applicable guarantee terms.

The guarantee does not extend to:

• Fair wear and tear
• Moving parts such as ratchet mechanisms
• Consumable components
• Bits and repair kits

The breaker bar knuckle assembly is classified as a consumable component and is therefore excluded from the applicable Britool Hallmark guarantee.

A replacement XP900/RK repair kit is available separately.

Full applicable guarantee terms and conditions apply. These terms do not affect statutory consumer rights.

Important Information

• Genuine Britool Hallmark heavy-duty breaker bar
• 3/4" square drive
• 900mm / approximately 35" overall length
• Chrome vanadium steel construction
• Heat treated for additional strength
• Reinforced heavy-duty head design
• 180° pivoting head
• Spring-loaded socket retaining ball
• Designed for demanding professional manual fastening applications
• Suitable for compatible 3/4" drive sockets and accessories
• XP900/RK replacement knuckle repair kit available separately
• The knuckle assembly is classified as a consumable component and is excluded from the applicable guarantee
• The replacement repair kit is not included
• This is a manual breaker bar, not a ratchet wrench
• This tool is not a calibrated torque wrench
• Do not use with powered impact equipment
• Always use appropriately rated sockets and accessories
• Ensure the socket is fully engaged before applying force
• Avoid applying excessive sideways loading to the pivoting head
• Do not use extension pipes or other improvised methods to increase leverage
• Inspect the head, pivot and square drive regularly for wear or damage
• Do not continue using the breaker bar if the head or knuckle assembly becomes damaged
• This listing is for one Britool Hallmark 3/4" drive heavy-duty 900mm breaker bar. XP900/RK repair kit is available separately.