From the Manufacturer
Edge-Vision Abrasives kit contains various types of media for use with the Edge-Vision wheel. For use with the Work Sharp WS2000 Tool Sharpener only.
The ProTool replacement abrasive kit is designed for use with the Work Shop 2000 air-cooled dry sharpening system (Item# 3352000). U.S.A. Disc Type: Solid and Slotted Abrasive Pads, Grit: 80 and 220 PSA, Discs (qty.): 9