High-quality materials: This mini diamond disc is made of an alloy with a layer of corundum, providing excellent hardness and durability compared to other cutting discs. Practical: This diamond disc is compact and cuts faster. Its cutting surface is smooth and burr-free, allowing you to carry out precision work, especially in tight spaces and for flush cutting. 22mm diamond disc with vent hole: The circular diamond cutting part of the diamond disc 22mm cutting disc is also equipped with ventilation holes, facilitating the removal of residues and cooling, thus effectively reducing the wear of the cutting part. Wide Compatibility: This kit includes 8 ceramic cutting discs of different sizes (16, 20, 22, 25, 30, 40, 50, 60mm) and 4 mandrels (3.2mm), compatible with most rotary tools, such as Silverline, GMC, Tacklife, Intertek Mini Grinder and B&D. Applications: The cutting discs Diamond cutting discs can cut metal, tile, marble, ceramic, glass, wood, gemstones, and other materials. They