DescriptionDiy crafts 22mm 5pcs carbon steel mini diamond cutting discs tools this set of 5 double sided, vented diamond cutting discs will make your tools more powerful and functionality when you are doing diy, craft, jewelry making or silver smithing work. Application : cutting gemstones, glass, ceramics, porcelain, tiles, carbide, rocks, aluminium and copper. Specification : disc diameter : 22mm disc thickness : 0.60mm arbour shaft length : 36mm arbour shaft diameter at top : 4.5mm arbour shaft diameter at bottom : 3mm material : carbon steel coating : dual sided and edge compatibility : the majority of rotary and air tools, including dremel note : add some water for coolant when using it. Package includes : 5 x 22mm diamond cutting discs 1 x drill bit diy crafts