Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si Compatibility: the diamond cut off wheels are with the majority of and , electric grinder Good quality and durable: the diamond cut off discs are thin, completely coated with fine diamond particles, breathing holes for reducing heat and removing debris, great for making slots and slit Wide range of usage: This diamond cutting are suitable for doing DIY, cutting, sawing, carving, sharpening and filing hard materials including all kinds of precious , jade, marble concrete, brick, porcelain, ceramics, epoxy and other hard , but not recommended for metal. Notice: For your safety, please must wear gloves and goggles and be care around when using mandrel diamond cutting . It may become very hot when cutting, so add some water to keep it cool. Disc diameter: 0.87 inch/ 22 mm Disc thickness: 0.02 inch/ 0.6mm Mandrel length: 1.50 inch/ 38 mm Mandrel diameter: 0.12 inch/ 3.0 mm colour:Silver Material:diamond Package Contents: 20 * Diamond cutting 4 * Mandrel Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.