Q. Do I need to purchase the Work Sharp Knife Sharpening System separately?
A. Yes, this includes only the abrasives themselves. The Work Sharp Knife Sharpening System is sold separately and includes the belts as well.
Q. Do these abrasives work on any other knife sharpening attachments such as Knife Sharpening Systems for theWS2000 and WS3000?
A. No, these are specifically designed for the WSKTS Worksharp Knife Sharpener, it won't with with the other systems.