[Material] - The sanding bands are made with durable open-coat aluminum oxide grains and fully resin bonded, quality craftsmanship allows the sand grain even, providing fast and long-lasting sanding [Connection] - Precisely designed two-way belt joint, diagonal connection eliminates splice bump, belt sander belt interface is flat, firm and not easy to break under pressure Provides coarse to fine sanding, stripping and sanding of wood, aluminum, fiberglass, rubber, plastic, stone and non-ferrous metals, among others. Widely used for grinding alloys, glass, non-ferrous metals, etc., it has heat-resistant and water-resistant effect, suitable for dry grinding, can add coolant, good grinding effect 【Firm Connection】The two-way tape joint to eliminate the bulge at the splice, making the sander belt connection firmer, can be driven in any direction and will not break during use.