This cutting wheels are sturdy and durable, it is coated with fine diamond particles and designed with breathing holes for reducing heat and removing debris, fit for making slots and slits. Description: Solid hard,easy to use with your electric grinder. Ideal for marble, concrete, brick, porcelain, ceramics, epoxy, woods, rock, glass, metal, tile, stone, etc. For your safety, please must wear gloves and goggles and be care around spark when using mandrel diamond cutting tools; Great material:The circular saw blade is made of high quality strong carbon steel, the superior hardness construction allows it can use for a long life. Feature : carbon steel discs teeth are very sharp which ensure fast and fluent cutting,it is ideal for stainless steel and other metal cutting ,it is great accessories for power tool. Specifications: Cutting disc material: carbon steel Coating: dual-sided and edge Compatibility: fit for Dremel rotary tools Specification: Mini Diamond Cutting Discs Feature: Solid Hard / Easy To Use Material: Carbon Steel Disc Diameter: 22mm Center Hole Diameter: 3mm Shank Diameter: 3mm Disc Thickness: 0.6mm [ Note ] > The real color of the item may be slightly different from the pictures shown on website caused by many factors.such as brightness of your monitor and light brightness. > Please allow slight deviation for the measurement data. > Please allow 2-3cm error due to the hand measurement . Package Included: 10X * 22mm Diamond Cutting Discs 2X * Mandrel