... Cup Wheel 1. Diameter: 100mm-250mm 2. Type: Single row, Double row, Turbo, Swirl 3. Grit No.: Course Medium, Fine Diamond Cup Wheels, Grinding Wheel ... are designed for grinding and polishing marble, granite, concrete, porcelin ... : 100mm-250mm.2. Application: Diamond double row grinding cup wheels are ideal for form mark removal, deburring, ...