50pcs Diamond Cutting Wheels with Mandrels + Screwdriver Set for Dremel Rotary Tool Metal Grinding Grinder Cut Off DiscFeatures:DiamondCutting Discs: Cutting Discs are made of high quality diamonds. High cutting efficiency, high durability, stable quality, etc. Durable: The diamond cutting disc is evenly coated with diamond particles. The cutting disc with dimensions is sharp and durable. Great tool for: suitable for most rotary tools and pneumatic tools. Ideal for cutting gemstones, glass, ceramics and porcelain. Specification:Diamond MaterialDiamond Cutting Circles Outer Diameter: 25mm/1 inch, 22mm/0.87 inch, 18mm/0.7 inch, 16mm/0.6 inchDiamond Cutting Circles Inner Diameter: 3mm/0.12 inchQuantity 40 Pcs Diamond Cutting Wheel, 8 pcs. Mandrels and 2 pcs. ScrewdriverPackage Included40 × Diamond Cutting Wheel8 × Shank2 × Screwdriver