Product material: the wood grinding wheel is made of high-quality carbon steel, which is durable and extremely sharp. Product material: the wood grinding wheel is made of high-quality carbon steel, which is durable and extremely sharp. Accessories of multifunctional angle grinder: compatible with 4 1/2 inch angle grinder, which can meet your various woodworking needs. Product features: From precision cutting to complex carving and smooth grinding, durable and efficient Scope of use: They can handle wood, plastic, rubber and so on well. Very suitable for professionals and DIY enthusiasts. The package includes: 5 upgraded wood grinding wheels with different shapes (right angle flat, curved, flat and inclined), 5 rotating burrs,4 conversion rings (7/8 inch to 5/8 inch).