Product Efficient Powerful - - The Edge Diamond Grinding Wheel is more wear-resistant than ordinary edge grinding wheels. It is simple, safe, and easy to use, and the high-quality coarse diamond surface ensures excellent performance on multiple surfaces. High-Quality Material - - Made of high manganese steel and brazed diamond, it's designed for long life. Fast Precise - - Effortless operation, which makes it very comfortable and makes it possible to do the job faster and with greater precision. Wide Use - - The Edge Diamond Grinding Wheel is designed for spot leveling, edge grinding, chamfering, and arc grinding of ceramic tiles, marble, granite, quartz stone, pebbles, masonry brick, concrete, and much more! Can Be Used Dry or Wet - - Edge Diamond Grinding Wheel Especially for concrete outside wall in building or decoration. Edge Diamond Grinding Wheel-For Marble, Granite , Quartz , Ceramics , Artificial Stone And Glass-Ideal For Shaping, Stone Grinding, Polishing, Chamfering-Suitable For All Angle Grinders:Material: High manganese steel material and Brazed DiamondArbor diameter: 7 or 8