Feature: 1. Wide application in enlarging,shaping or bevelling existing holes in Tile,Porcelain,Marble,Granite,Concrete,etc. 2. Vacuum brazing technology allows higher work efficiency and longer endurance. 3. Less scraps,minimize cracks,better finish quality. 4. Fit angle grinder and other standard grinding machines. 5. Dry or wet use. Specification: Material: Diamond Color:orange and silver Thread: 5/8-11 inch Diameter:6/8/10/15/20/25/30mm Cutting Length :45-50mm(approx) Quantity:1PC Package list: 1 * Diamond core drill bit Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data.