ZFE 12Pcs 22mm Rotary Tool Accessory Diamond Cut Off Wheel Diamond Blade Diamond Disc Wheel Fits Dremel Craftsman Rotary Tools HIGH QUALITY AND DURABLE: The Cutting Wheels are made of Carbon steel, strong enough for cutting gemstones, glass, geramics, porcelain, tiles, carbide, rocks, aluminium and copper PACKAGE COMES WITH: Hot New 12pcs Mini Sharp 22mm mini sharp dremel tools, thin and sharp, which is perfect for making slots and slits, coated on both sides as well as around the edge VARIOUS USES: This set of 12 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 ATTENTION: For your safety when using our product, please must wear gloves and googles and be care around sparks. It may become very hot when cutting, add some water to keep it cool WARM NOTE: Use cutting oil and just keep hitting and releasing the material you are cutting to avoid overheating the disk. If you get a feel for it with this method, your tool will last a long while and to job will go faster than if you try to do it too fast and just wear out the blade