ITEM NAME:20Pcs Diamond Cutting Wheel(22Mm)with 4Pcs 402 Mandrel(3Mm)and Screwdriver S8P1 20Pcs Diamond Cutting Wheel(22Mm)with 4Pcs 402 Mandrel(3Mm)and Screwdriver S8P1 SIZE:The cutting discs diameter:22mm;Thickness:0.6mm;Mandrel Diameter:3.0mm;Screwdriver:98mm. APPLICATION:Designed for rotary tools and replacement EZ545/544 lock cut off wheel. HIGH QUALITY AND DURABLE:The aluminum oxide cut off discs are thin and sharp.It is completely coated with fine diamond particles,breathing holes is for reducing heat and removing debris,perfect for making slots and slits. MULTI-PURPOSE:This diamond grit cutting wheel are suitable for doing DIY,cutting,sawing,carving,sharpening and filing hard materials including all kinds of precious stones,jade,marble concrete,brick,porcelain,ceramics,epoxy and other hard woods.But not recommended for metal. ATTENTION:For your safety,please must wear gloves and goggles and be care around spark when using mandrel diamond cutting tools.It may become very hot when cutting,add some water to keep it cool. Color:silver Material:high speed steel Package Contents: 20* double sided vented 545 Diamond grit cutting wheel 4* 402 mandrel 1* crystal screwdriver