... Swirl 3. Grit No.: Course Medium, Fine Diamond Cup Wheels, Grinding Wheel are designed for grinding and polishing marble, granite, concrete, porcelin tiles ... Products Description:1. Diameter: 100mm-250mm.2. Application: Diamond double row grinding cup wheels are ideal for form mark removal, deburring, chamfering, ... No.: Course, Medium, Fine Contact: Mr. Adrian Zhan Diamond Cup Wheel, Grinding Wheel