Diamond Burrs Grinding Drill Bits for Rotary Tool 1/4-Inch Shank 10mm Tapered 120 Grit 5 Pcs

Description: * Suitable for fine detail work cutting engraving carving finishing jade grinding and mold repair. * Ideal grinding tool for jade ceramic glass wood precious stone and other abrasive materials. * Can be installed on the electronic grinder engraving machines hanging mill and hand electric drill. Tips: * Before use the new tool should be tried at a low speed. If there is a jumping problem do not continue to use it. * The tool needs to be adjusted to run smoothly otherwise the object will be unsmooth and the tool may be prone to breakage to the handle. * It is recommended to use dripping water or put it into the pool for cooling treatment to improve tool utilization and object yield. * Please press gently and avoid shaking. Diamond tools are used to grind workpieces. If excessive force is applied the grinding powder is not easy to remove. * Flying chips may be generated during use. Please use jigs non-slip finger cots and wear protective glasses when using it.