WIDELY APPLICABLE - BEAMNOVA Diamond Jewelry Grinding Wheel is suitable for grinding and cutting hard materials such as gem, granite, marble, glass, tungsten steel, cemented carbide, and ceramics.USED IN DRY & WET CONDITIONS - The metal bond lapidary wheel can be used in wet or dry conditions. It is recommended to use it in wet conditions. After use, it should be dry to prevent rust.SHARP - BEAMNOVA Jewelry Grinding Wheels are electroplated with high-quality emery with good self-sharpening. It does not need to be sharpened before use, and it has the characteristics of high sharpness, which can be performed with fast grinding.EXCELLENT FLATNESS - BEAMNOVA Lapidary Masonry Wheels feature a smooth emery surface without excess nickel, which produces no chattering during use and is able to create a smooth, neat polished surface without broken edges.