The CA-BELT-AL 1 X 42 40G PK10 from Field Tool Supply is a high-performance aluminum oxide sanding belt, measuring 1 inch by 42 inches. With a grit of 40, this belt is ideal for aggressive material removal and surface finishing. Designed for compatibility with various sanding machines, it offers excellent durability and consistent performance. The aluminum oxide construction ensures a long lifespan, making it suitable for woodworking, metalworking, and other applications. Each pack contains 10 belts, providing great value for professionals.