ITEM NAME:30 Pcs Diamond Cutting Wheel (25Mm/20Mm/16Mm Each 10), Diamond Coated Cutti V4H3 30 Pcs Diamond Cutting Wheel (25Mm/20Mm/16Mm Each 10), Diamond Coated Cutti V4H3 The diamond cutting wheel is sharp and sturdy and is suitable for cutting gems, glass, ceramics, porcelain and ceramic tiles. Suitable for most rotary and air tools. Diamond cutting disc is uniformly coated with diamond particles. It may become very hot when cutting, add some water to keep it cool Mandrel Diameter:3.0mm colour:Silver Material:Diamond Package Contents: 10 * 25mm double sided vented Diamond grit cutting wheel 10 * 20mm Diamond grit cutting wheel 10 * 16mm Diamond grit cutting wheel 6 * mandrel