ITEM NAME:10Pcs Accessories 20mm Diamond Cutting Disc for Metal Grinding Wheel Disc M B1H4 10Pcs Accessories 20mm Diamond Cutting Disc for Metal Grinding Wheel Disc M B1H4 DIY Supplies:Metalworking Uses:cutting precious stones, jade, thin metal Compatible With: Rotary Tools & Die Grinders (ALL Brands) Color: silver material: metal Size about: 20mm in diameter Wheel Diameter: 1 inch Mandrel Diameter: 1/8 inch (3mm) Mandrel Length: 1.4 inch(36mm) Package Contents: 10 * Diamond Cutting Wheels 2 * Stainless Steel Mandrels