For grinding repairing and profiting stone or concrete.(Diamond Cup Wheel ) 1.Item:Diamond cup wheel (Turbo,Two-row,Single-row,Aluminum base)2.Thread sizes for 5/8-11,M14 etc3.Diameter-inch:4-7"4.Grit:6#,16#,30#,50#,60#,120#,200#,400#,500#Will production according your detailed requirement and characteristics.welcome contact with us if you have any demand .