Work Sharp WSSAKO81120 Fine Grit Belt Kit Kit includes (5) X4 Fine Grit Norton Nora 4 Micron Belts (P3000 equivalent). Belts are 3/4" x 12" and ONLY fit the Ken Onion Edition Sharpener and Tool Grinding Attachment. These premium grade, engineered abrasives are long lasting and designed for knife & tool sharpening and grinding applications. Does not fit WSKTS.