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OPNBar Trucker Tool for Shipping Container & Truck Trailers - Made in USA
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Breaker Bar

In the world of mechanics and DIY enthusiasts, there are certain tools that stand out as unsung heroes, quietly performing the heavy lifting and making seemingly impossible tasks a breeze. One such tool is the breaker bar. Often overshadowed by flashy power tools and precision instruments, the breaker bar is a humble yet indispensable part of any toolbox. Here, we’ll explore what breaker bars are, their various applications, and why they deserve a place in your arsenal of tools.

What is a Breaker Bar?

A breaker bar, also known as cheater bar or torque bar, is a long-handled tool designed for applying torque to fasteners, particularly stubborn or tightly secured nuts and bolts. Its primary purpose is to provide leverage and mechanical advantage, allowing you to exert more force than you could with a standard wrench or socket handle. Breaker bars typically feature a non-ratcheting design, meaning they lack the click-clack mechanism found in ratchets, which enables them to handle immense force without fear of failure.

The Anatomy of a Breaker Bar

A breaker bar is a straightforward tool in terms of construction. Its key components include:

Handle: The handle of a breaker bar is notably longer than that of a regular wrench or socket driver. This extended length is crucial for generating maximum torque and leverage. Handles can vary in length, with common sizes ranging from 12 inches to 24 inches or more.

Breaker Bar – Patent Info – OPNBar Version 4

Material: Breaker bars are usually constructed from robust materials such as hardened steel or chrome vanadium steel. This ensures they can withstand the immense pressure applied when loosening or tightening stubborn fasteners.

Knurled Grip: Some breaker bars have a knurled or textured grip on the handle to provide better control and prevent slippage, especially when your hands are oily or greasy.

Applications of Breaker Bars

Breaker bars are invaluable for a variety of tasks, including:

Automotive Repair: Breaker bars are commonly used in automotive repair and maintenance. They excel at loosening lug nuts, crankshaft pulley bolts, suspension components, and any other fasteners that have been tightened with extreme torque.

Breaker Bar - Automotive - OPNBar Version 4

Breaker Bar – Automotive – OPNBar Version 4

Construction and Building: In construction and building applications, breaker bars are handy for assembling or disassembling scaffolding, securing large bolts in structural elements, and tackling heavy-duty construction machinery.

Breaker Bar - Pipe Wrench - OPNBar Version 4

Breaker Bar – Pipe Wrench – OPNBar Version 4

Heavy Machinery and Equipment: Breaker bars are essential for working on heavy machinery and equipment, such as tractors, excavators, and industrial engines. They can handle the high torque requirements of these machines effortlessly.

Home DIY Projects: Whether you’re building a backyard deck or assembling furniture, breaker bars can assist in tightening or loosening those stubborn bolts that seem to resist your best efforts with a regular wrench.

Breaker Bar - Wrench - OPNBar Version 4

Breaker Bar – Wrench – OPNBar Version 4

Safety Considerations

When using a breaker bar, it’s crucial to prioritize safety:

Wear Protective Gear: Always wear appropriate safety gear, including gloves and eye protection, when working with breaker bars.

Position Yourself Correctly: Ensure that you have proper footing and leverage before applying force with a breaker bar. This minimizes the risk of accidents.

Inspect the Tool: Regularly inspect your breaker bar for signs of wear or damage, such as cracks or bent handles. A damaged tool can be dangerous.

Apply Steady Pressure: Gradually apply pressure when using a breaker bar rather than applying sudden, jerky movements. This reduces the risk of slipping or breaking the fastener.

Breaker bars may not be the flashiest tools in your toolbox, but they are undoubtedly among the most essential. Their ability to provide unparalleled leverage and tackle the toughest fasteners makes them indispensable in various industries and DIY projects. So, the next time you encounter a stubborn nut or bolt, don’t overlook the unsung hero waiting quietly in your toolbox – the mighty breaker bar.

OPNBar as a Breaker Bar

OPNBar version 4 Leverage Bar has a double ergonomic grip, deeper mouth, Breaker Bar/Cheater Bar/Torque Bar, with extended handle for more clearance (with optional 5th Wheel Release and extensions). It is also compatible with triangular container levers.

In later versions of OPNBar, we feature an optional female screw attachment at the base of the bar that allows the operator to add on different extensions for different leverage uses.

In these versions, we removed the 5th wheel hook from the front of the tool, and now offer an optional 5th wheel hook extension. You will find that this extension is much thicker and stronger than typical 5th-wheel hooks sold on the market today.

Please be sure to read OPNBar Extended Instructions & Precautions

OPNBar is more than a 3 in 1 trucker and container safety tool. Aside from being a shipping container safety hand leverage tool, tire thumper, and 5th wheel pull hook, it also serves as a container seal breaker, cam pin compressor, T Handle toolbox latch tool, breaker bar, and more!

Please be sure to read OPNBar Extended Instructions & Precautions

This intermodal container (also known as ISO containerconex boxrailroad container, and certain truck trailers) cargo inspection tool and leverage safety bar is to aid in opening and closing side-by-side doors found within Dismountable Shipping Cargo Container Trailer Transportation Industries (Railroad, Harbor, and Trucking Industries).

It is the perfect instrument, to assist the truck driver or yard worker in opening and closing of shipping container doors and locking mechanisms found on conventional style (side by side) doors, allowing opening and closing of shipping container doors to be a great deal easier.

Our Multipurpose Shipping Container and Trucker Tool generates great value in addition to the safety and savings our tool provides to trucking companies and their safety departments, along with insurance companies, reducing workman’s comp claims.

Designed to fit and extend the door latch handles on side by side doors found on the following units with the safety of the truck driver, operator, and worker foremost in mind:

This Intermodal Container (also known as ISO ContainerConex BoxRailroad Container and certain Truck Trailers) cargo inspection tool and leverage safety bar is to aid in opening and closing side-by-side doors found within Dismountable Shipping Cargo Container Trailer Transportation Industries (Railroad, Harbor, and Trucking Industries).

We are confident in the quality of our tool.  Here are some additional specs:

  • Safety tool with high-pressure tolerance
    * ratings for heat treated and non-heat treated tools will vary
  • 3 layers of rust inhibitors
  • Plastic vinyl handle
  • Anti-corrosive to gas and oil, helps operators hands from slipping
  • Quality materials, quality control, and made in the USA. MADE IN THE USA with AMERICAN STEEL, AMERICAN STANDARDS, and AMERICAN LOVE.

Door Latch Handle Extender

Our tool assists the truck driver or yard worker in opening and closing hard to open container doorsfrozen shipping container doors and rusted doors and locking mechanisms found on conventional style (side by side) doors, allowing opening and closing of frozen shipping container or rusted doors to be a great deal easier.

As a Door Latch Handle Extender, it is a safety leverage bar to assist the truck driver and operator in opening and closing shipping container doors. Great for opening and closing cargo containers that are rusted or frozen!

  • Leverage tool uses the principles of leverage to do the difficult work
  • Promotes safety, reduces injury and workman’s comp claims.
  • Leverage helps to loosen hinge pins and blades that are seized due to corrosion
  • Leverage helps to loosen damaged or frozen gaskets preventing shipping container doors from opening and closing.
  • Eliminates the need for additional tools.


Please be sure to read OPNBar Extended Instructions & Precautions

Tire Thumper

The Tire Thumper function assists the truck driver in a quick method of evaluating properly inflated tires for truck driver safety. Properly inflated tires make a loud, sharp thud. Poorly inflated tires make a dull thud.

A quick and easy way to check tire pressure is by thumping your tires. Some trucks have many tires and tire thumping is the fastest method for checking tire pressure before hitting the road.

  • Tire Thumper (aka tire beater) assists the truck driver and operator in evaluating properly inflated tires.
  • Some trucks have many tires and tire thumping is the fastest method for checking tire pressure before hitting the road.
  • If there is air in the tire, the tire thumper will bounce easily and make a loud, sharp thud; and if the tire is flat (no air) it will not bounce much and will give a sound like a dull thud when it is smacked.
  • Eliminates the need for additional tools.


Please be sure to read OPNBar Extended Instructions & Precautions

5th Wheel Pull Hook

The 5th Wheel Pull Hook assists the truck driver in releasing the fifth wheel which can cause neck, shoulder and back injury, damaging your clothes with grease, oil, and road grime. This pull hook can help eliminate these problems.

Using a strong 5th wheel hitch pull hook is recommended when separating a tractor from the trailer to help reduce neck, back, and shoulder and other injuries associated with having to reach under a trailer in order to release the tractor from the trailer.

  • Soft-metal hooks (such as those made from aluminum) are unsafe as they are too susceptible to bending. Our hook is made of heavy-duty, rust-resistant steel.
  • Reaching under the trailer to release the fifth wheel can cause neck, shoulder and back injury, as well as, damaging your clothes with grease, oil, and road grime. Our 5th Wheel Release Hitch Pull Hook can help eliminate these problems.
  • Eliminates the need for additional tools.


Please be sure to read OPNBar Extended Instructions & Precautions

Container Seal Breaker

OPNBar also acts as a Shipping Container Seal Breaker, for plastic and metal, which can eliminate the need for wire cutters when on the go.

Please be sure to read OPNBar Extended Instructions & Precautions

Cam Pin Compressor

OPNBar also acts as a Shipping Container or Trailer Cam Pin Compressor, for misaligned cams and keepers.  Placing OPNBar underneath the cam can give leverage to align the cam with the keeper.

Please be sure to read OPNBar Extended Instructions & Precautions

T Handle Toolbox Latch Tool

OPNBar also acts as a T Handle toolbox latch tool for stuck latches.  The groove in the OPNBar tool can fit over T Handle toolbox headache rack latches when difficult to turn them.

Please be sure to read OPNBar Extended Instructions & Precautions

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