3 sizes 12mm / 16mm / 19mm, including 2 sets, compatible with standard screwdrivers and power drills. High Quality Material The cutter is made of high hardness high quality carbon steel, sharp, durable, rust-proof and burr-free. Unique 90° Design The 90 degree corner milling ensures clean, precise milling and the five-flute chip design ensures free chip flow and fast cutting without chattering. li> Easy Deburring Use these tapered cutters to remove burrs. with ease and are easy to break and remove without causing scratches. Easy Deburring Use these tapered burrs to easily break and remove burrs without causing scratches. Note: The data is all measured manually. Please allow 1-3cm error.Due to the difference in light and display, there may be a certain color difference.