This pack includes Wicked Edge 1500 Grit Diamond Stones and Black Glass Patens. The 1500 grit takes your edge refinement to razor-sharp levels while still maintaining some toothiness. The Glass Platens are used with our Diamond Lapping Film and put a beautiful, super fast polish on your blade. We suggest using the 6 Micron Diamond Lapping Film after the 1500 grit. Each handle has one side of 1500 grit (green) and the other of a Glass Platen (white).