Glass Cutting Disc - The diamond cutting blade is resistant to high temperature, which can reduce vibration and cut straighter and faster. It is sharp and will not collapse. It is multi-purpose, Low grinding noise, less dust, less debris. High Quality - The cutting disc is made of premium diamond high manganese steel matrix, the glass will be cut by this ultra-thin saw blade accurately with few chip. High Temperature Resistance is more safe for you to work without worries. Easy to Use - It is easy to install and use, and can withstand the requirements of dry / wet cutting and long-time continuous cutting. Multipurpose - Compatible with all 4 inch angle grinder. Also packed with conversion ring(4/5 to 7/8 inch), convenient to use. For smooth cutting, chamfering and grinding of glass, jade, crystal, wine bottle, ceramics, ceramic tiles and other more materials. Package Included - 5Pack Glass Cutting Dics; 5 x Conversion Rings(4/5 to 7/8 inch).