Size - Grinder Diameter: 115mm / 4.53inch, Arbor Diameter: 22mm / 0.87inch. The wood grinder diameter is 4 inch, the arbor is 5/8 inch. This size can fit all 4" or 4 1/2" angle grinders in the market.Material - The wood grinding wheel is made of 45# steel. The product surface is under black oxide, which can increase the product's heat resistance and wear resistance. With higher hardness and longer life.Feature - The grinder blades consist of hundreds of pointed teeth, and can quickly remove residues or hard materials. Improving the efficiency of our work.Application - The wood grinding wheel is great for non-metallic materials, rapid cutting, and grinding speed. Suitable for any wood, furniture, or plastic. Suitable for grinding, carving, and removing small tree stumps.Notice - 1. Clean up metal materials such as nails on the material before use. 2. Avoid continuous work under high temperature. 3. Remove residual wood chips: use a blowtorch lighter to clean easily and a few quick brushes with a soft wire brush, the heat will not hurt your teeth.