THE TOOL The UNIBURR simplifies the repair process, potentially fictionalizing repair time, as well as bypassing the need to replace expensive or hard to find hardware while keeping safety at a previously unattainable level. The Difference This tool does not chatter. This tool does not over heat the work piece. This tool does not over heat or spark. Threads are sheared off, not folded over as happens with a grinder. This tool is the only external chamfer device that holds a patent for hand power drill use. The difference between this tool and any other method is time saved. And time is money.