You have three choices for the Ez-Vex Solid Wheel.
1) Solid Wheel with Hook and Loop on one side and flat on the other side for use with 6 inch PSA pads (H&L/PSA).
2) Solid Wheel with Hook & Loop on both sides (H&L/H&L).
3) Solid Wheel with PSA on both sides (PSA/PSA).
We are manufacturer approved trainers for the Ez-Vex Sharpening System. Contact us for more information about sharpening training.