BUYTUS 4inch Diamond Grinding Cup Wheel Aluminum Base Turbo Abrasive Tool for Concrete Granite Floor Coarse M14 Thread. Diameter: 4inch/100mm ; Segment height : 7mm ; Thread: M14 ; Package: 1PC . High quality segment grinding cup wheel Designed for grinding and shaping of stone granite marble and concrete surfaces, edges and angles . Wet use recommend . Easy to use,Good Performance and long life.brand new and high quality. Farbe:One Color