【SPECIFICATIONS】 Sanding discs 2 inch 180 grit 100 pcs per box. 【MATERIAL】 These sandpaper discs are made of aluminium oxide, the number of the grits mean the degree of roughness, which affect the polishing effect, so you can easily choose the suitable specification grits. 【HOOK and LOOP BACKING】 Makes grit removal & replacement quick and easy, and well fitting in sander during woodworking. 【WIDELY APPLICATIONS】 Good choice for auto body and paint shops, woodworking wood furniture making, metalworking metal sanding, crafting, household, drywall, industrial, fiberglass, plastics, or any other surface that needs sanding. 【Note】When purchasing, please take care to select the mesh size you require.