Utoolmart Tungsten Carbide Rotary Files for Die Grinder Drill Bit Wood Soft Metal Carving Polishing Made of heat-treated YG8-tungsten carbide that hardness can reach up to above HRA85, sharp and sturdy, long service life.Single groove rotary files are more suitable for the object density is relatively high, such as alloy steel, stainless steel, hardened steel.Widely used for metalwork, tool making, model engineering, wood carving, jewelry making,welding, chamfering, casting, deburring, grinding, sculpting. Tungsten Carbide burrs can be processed cast iron, cast steel, carbon steel, alloy steel, stainless steel, copper, aluminum and other metals, and marble, jade, bone and other non-metallic. Processing hardness up to HRC58-60. It can replace the petiole small wheel without dust pollution, and process out a various of high-precision mold cavity. High production efficiency, the processing efficiency is several times higher than file, nearly 10 times higher than small wheel stalk. Suitable for woodworkers and enthusiasts who clean up welds or works with metal frequently. Easy to grasp and use. Unique tooth angle prevents chipping.Mainly used for grinding channel impeller, cleaning tubes, finishing mechanical internal surface, enlarging holes, processing and engraving metal non-metal materials. Notes: Requirement of the carbide burrs rotating speed is: 4000-50000 rpm. Always ensure your burrs shank is well inserted into your collet and clamped down tightly.Clamped down tightly and be sure the working direction is always counterclockwise during use.Prevent chips flying apart when working and better wear goggles. Keep your eyes and belongings away from the working bits. Feature Fits most rotary die grinders.Can be used to finely process metal die cavity and mechanical chamfering, rounding, grooves, and clean up burrs of castings, flashings of forgings, welds of weldments. H0618M6 A0820M6 H0820M6 H1025M6 M1625M6 Add to Cart Add to Cart Buying Options Add to Cart Add to Cart Price $9.59$9.59 $11.19$11.19 — no data $12.49$12.49 $16.79$16.79 Shank diameter 6mm / 0.24-inch 6mm / 0.24-inch 6mm / 0.24-inch 6mm / 0.24-inch 6mm / 0.24-inch Cutting edge diameter 6mm / 0.24-inch 8mm / 0.31-inch 8mm / 0.31-inch 10mm / 0.39-inch 16mm / 0.63-inch Bit Type Oval Cylindrical Oval Oval Conical Material YG8 YG8 YG8 YG8 YG8