This product has a manufacturer warranty against defects in materials and workmanship for a period of ONE (1) YEAR from the date of original retail purchase. See our Seller Return Policy for more details. [Finish Your Projects]: Smooth out edges and other imperfections on your projects or crafts with the ABN 0.1 to 0.8-Inch Deburring Chamfer Tool; Create smooth, beveled edges on your art, home, or vehicle projects with stainless steel deburring tool [Perfect Cut Every Time]: Deburr chamfer bit repairs damaged bolts and fasteners to get the most uses; Deburring repair tool cuts rough edges off fresh-cut pipes and bolts to create a beveled edge [Designed for Different Materials]: Metal and PVC deburring tool can be used on stainless steel, hardened steel, mild steel, copper, brass, aluminum, fiberglass, wood, and plastic; Use copper deburring tool on round bars, nuts, bolts, or rebar 0.1 to 0.8-inch (3 to 19mm) in diameter [Fits Your Tools]: 1/4-inch hex shank on external deburring drill bit fits your 0-400 RPM (revolutions per minute) drills; Threaded rod deburring tool should not be used with impact drivers [Built to Last]: Bolt rounding tool is made of high-speed steel which displays hardness and helps prevent abrasion; Deburring chamfering tool measures 1.8in (4.6cm) long with a diameter of 1.1in (2.8cm) WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.