6pcs 22mm Diamond Cutting Grinding Wheel Disc Set with 3mm 1/8'' Mandrel for Dremel Rotary Tools Wheel Type: coated with diamond particles, effective for dremel tools for cutting Shank: 1/8in; Disc diameter: 22mm (0.87") Ideal for marble, metal,concrete, brick, porcelain, ceramics, epoxy and woods Easy to install, easy to cut through various materials For DIY, craft work, jewelry making or silver smithing