Description: -Carbide rotary files, also known as tungsten steel rolling mill, process a variety of metals (including hardened steel) and non-metallic (such as marble, jade, bone), wood carving choice! -Processing hardness can be up to HRC70. In a great part of working, it can replace Petiole small wheel. -No dust pollution.High production efficiency,the processing efficiency higher than small wheel stalk nearly ten times . -It is an important tool to improve production efficiency and achieve fitter mechanization jobs. -Suitable for all skill level, this is a essential kit for woodworkers & enthusiasts who cleans up welds or works with metal frequently, easy to grasp and use, and reliable. Specification: Color:Sliver Material:Tungsten carbide Size:Total length 65mm, outer diameter of the tip 10mm,tip blade length 25mm Fit for:Finishing all kinds of metal mold,all kinds of metal and nonmetal carving,parts Processing,etc. Package Includes: 5 Pieces Rotary Burr File Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!