Specification: Diameter 4"/100MM, 4.5"/115mm, 5"/125mm, 7"/180mm M14 or 5/8-11 Thread, Diamond height 5MM, Diamond Grits #40/50 ATTENTION: 5/8-11 thread is more popular in America Area. Quantity: 1pc only (please choose right thread) Dry or wet Grinding cutting, Application for concrete,Brick,hard stone granite, marble ect. High Quality industry diamond Grain were used to improve the performance both on efficiency and working life Double row design and 40/50 grits provide good finishing Can be used on most angle grinder or grinder machine <><><><><><><><><><><><><><><><><>end<><><><><><><><><><><><><><><><>