Features: Brand new and high quality The diamond cutting off disc is made of high quality diamond With high cutting efficiency, high durability and stable quality. These diamond cutting off discs are suitable for fine polishing work. Please make sure the size before purchase. Cutting off discs have breathing holes designed to reduce heat and remove debris during use. These diamond cutting off discs are suitable for most rotary and air tools. Please make sure it fits your tool before purchase. The grinding disc is widely used for cutting glass, ceramics, porcelain, carbide, rock, aluminum, etc. Specifications: Material: Diamond Type:With/Without holes Shank: 3mm Diameter: 20mm/22mm/25mm/30mm Package Includes: 1 Set Diamond Saw Blade note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.