【Grains】-Including most used grits: 8 X 40/60/80/120/180/240 grits, total 60pcs 10 x 330 sanding belt, meet your daily sanding and polishing needs 【Material】- The sanding bands are made with durable open coat aluminum oxide grits and fully resin bonded, the fine craftsmanship allows the grit to sand evenly, providing fast and smooth sanding. sustainable 【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 【Application】 - Suitable for 330X10mm（13X3/8 inch）belt sander - providing coarse to fine sanding, stripping and sanding for wood, aluminum, fiberglass, rubber, plastic, stone and non-metals. ferrous etc. 【Satisfaction Guidelines】-Very comprehensive grit size from coarse to fine 40/60/80/120/180/240, meet all of your sanding jobs。