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The BON TOOL 21-763 is a 5/8-inch replacement barrel designed for use with the Bon barrel jointer. Machined from hardened steel, this barrel delivers consistent joint profiles in mortar work and concrete flatwork applications. Threaded ends allow field technicians and masons to swap barrel sizes quickly without special tooling, minimizing downtime on the job. The compact form factor measures approximately 2.99 inches in length and 0.63 inches in diameter, making it easy to carry as a spare on any masonry project.
This replacement barrel is suited for residential and commercial masonry applications where tooled mortar joints are required. It is typically installed by masons and flatwork finishers working with brick, block, or concrete surfaces. Having a spare barrel on hand allows crews to match joint profiles to project specifications without returning to a supply house mid-job.
Designed as a direct replacement barrel for the Bon barrel jointer. Various sizes are available to accommodate different joint width requirements depending on contractor preference.
Installation is performed by masons or flatwork finishers as part of routine jointer maintenance or size changeover. Thread the replacement barrel onto the jointer handle by hand until firmly seated before use. Inspect threads on both the barrel and handle for debris or damage prior to assembly. No power tools or specialized equipment are required for the changeover.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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