Deburring External Chamfer Tool PRODUCT SPECIFICATION: MATERIAL: High Speed Steel (HSS)SHANK: 1/4 Inch Hex Shank Color: BlackPRODUCT FEATURES:- [PREMIUM MATERIAL]- This Deburring External Chamfer Tool is made of high quality HSS, strong, durable, anti-rust, withstanding high pressure;- [EASY TO USE]- First, connect the deburring external chamfer tool with your power drill; Second, use the lowest speed on the drill bit; third, slightly apply pressure to remove the burr. This compact tool is time-saving and easy to operate; serves as a great helper and addition to your tool box;- [WIDELY-USED]- This deburring external chamfer tool can be widely applied to stainless steel, hardened steel, mild steel, copper, brass, aluminum, fiberglass, wood, plastic. Fit size (approx.):5/16-32 bolts (.164) up to 3/4-10 (.750) - (8mm -19mm); Simplifies the repair process; a useful tool for those expensive or hard-to-find hardware;- [FINE WORKMANSHIP]- Excellent surface coating provides extra protection from damage against elements and substances such as oil and fluids that may come in contact with the deburring external chamfer tool during usage.