Made of silica carbide with a coarse and a fine grit side, the SCHEPPACH - 89490707 wheel preparer is essential to keep your wheel in excellent condition as on the first day with the same efficiency. The coarse side allows you to clean your wheel while the fine side allows you to refine your stone for finishing sharpening. Benefits: Increases grit for extra fine sharpening; the other side increases the roughness of the wheel Keeps the wheel in good condition with high efficiency Cleaning of the grinding wheel Features : Suitable for SCHEPPACH grinding machines: TIGER2000S / 2500 / 3000VS / 5000S / 7000S Composition: silica carbide Part number: 89490707 Packaging : One SCHEPPACH Grinding Wheel Prep - 89490707Delivered in its original packaging