【Compatibility】The 3/4" x 12" Replacement Belt Kit is compatible with the Work Sharp Knife & Tool Sharpener Ken Onion Edition (WSKTS-KO). 【Package Included】45 Packs 3/4" X 12" Knife Sharpener Sanding Belts include: 5 pcs 80 Grit Zirconia belts, 5 pcs 120 Grit Zirconia belts, 5 pcs 240 Grit Zirconia belts, 5 pcs 400 Grit high temperature calcined Alumina belts, 5 pcs 600 Grit high temperature calcined Alumina belts, 5 pcs 800 Grit high temperature calcined Alumina belts, 5 pcs 1000 Grit Silicon Carbide belts, 5 pcs 2500 Grit pyramid Alumina belts, 5 pcs 5000 Grit pyramid Alumina belts. 【Premium Abrasives】The material for coarse 80/120/240 grit is zirconia, medium 400/600/800 grit is alumina, fine 1000 grit is silicon carbide, and the polishing 2500/5000 grit is pyramid Alumina. These are wear-resistant and long-lasting. 【Stable and Strong】We use soft, strong blended fabric straps for the base. The flat, smooth joint and dual-directional tape allow a smooth transition in either direction, preventing any jumping during the grinding process for safer grinding. 【Wide Application】These different grinding belt sets meet all your sharpening needs: derusting, deburring, blade edge sharpening, welding spot grinding, and polishing for metal, wood, fiberglass, rubber, plastic etc.