The Work Sharp Ken Onion Bulk Bundle Value Pack includes 21 premium-grade, long-lasting abrasive belts designed for optimum sharpening performance and compatible with both new and previous models. This kit features a variety of grits: 5 red P120 belts for restoring damaged edges or reprofiling, 3 grey X65 (220 grit) coarse belts for initial sharpening, 5 grey X22 (1000 grit) medium/fine belts for final convex sharpening, and 5 white X4 (3000 grit) fine belts for refining the sharpened edge. Ideal for sharpening a wide range of items including pocket knives, kitchen knives, serrated blades, pruners, tools, and scissors, this value pack is built to last and comes backed by a 3-year warranty.