Triangular x 150 Grit A/O Non-Vacuum PSA DynaCut Dynafine Disc Coated with premium P grade aluminum oxide that is sharp and free cutting on a broad range of suraces and matrerials like hard and sof woods, plastics, fiberglass, composites and fabricated metals The durable Cwt paper backing resist tearing and is still moderately flexible A good choice for sanding a wide range of materials including wood, metal, aluminum, composites, solid surface materials and primed or painted surfaces A non contaminating, non-loading coating resists clogging when sanding soft materials and coatings increasing disc life. The PSA pressure sensitive treated backing provides quick and easy abraive changes. Part # 93985 Sold in qty's of 1 Grit 150 Length 3-1/8 Inch Width 2-7/8 Inch Line Dynacut Material A/O Abrasive grain Aluminum Oxide Country of origin Taiwan Product type Velcro Triangles Vacuum type Non-Vacuum