Grits: -Including the most commonly used grits: 8 x 40/60/80/120/180/240 grits, total 60 pieces 10 x 330 sanding belt, meet your daily grinding and polishing needs Material: - Sanding belts are made of durable aluminum oxide grain with open coating and fully resin bonded, high quality craftsmanship allows for even sanding and ensures fast and long-lasting sanding. Connection: - Precisely designed two-way tape connection, diagonal connection eliminates splice joints, belt sander belt interface is flat, firm and not easy to break under pressure Application: - Suitable for 330 x 10 mm (13 x 3/8 inch) belt sander - provides coarse to fine sanding, stripping and sanding for wood, aluminum, fiberglass, rubber, plastic, stone and metals NE ect. Satisfaction Guidelines: - Very full grit from coarse to fine 40/60/80/120/180/240, meet all your grinding jobs。