Diamond Chamfering Bits for Angle Grinders:versatile diamond chamfering bits are used with angle grinders for reaming, trimming, chamfering and polishing. Stone and ceramic processing, etc. Versatility, precision and a diamond coating make this an essential tool for professionals and hobbyists alike. Drill Bit:This drill bit is made of premium diamond particles in a high quality metal matrix, diamond wear-resistant and non-shedding, reliable and performance for all grinding, polishing, reaming and chamfering needs. Design:Bevelled Design - Relieves pressure and makes bevelling easy to enlarge, grind and polish existing holes. Provides sharpness for precise chamfering and sanding; provides a stable, secure fixture that prevents slippage. Easy To Install:This chamfering bit is designed to mount on the spindle of an angle grinder and is compatible with M10 spindle sizes. Can be mounted directly or with an extension bar. Reduces pressure for easy bevel enlargement, grinding and polishing