Description :22mm 5pcs Carbon Steel Mini Diamond Cutting Discs ToolsThis 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 : 22mmDisc thickness : 0.60mmArbour shaft length : 36mmArbour shaft diameter at top : 4.5mmArbour shaft diameter at bottom : 3mmMaterial : Carbon steelCoating : Dual sided and edgeCompatibility : The majority of rotary and air tools， including DremelNote : Add some water for coolant when using it.Package includes:5 x 22mm Diamond Cutting Discs1 x Drill Bit