Cylindrical Grinding Drill Bits Material : Alloy,diamond Shank Diameter : 3mm/ 1/8inch Head Diameter : 3mm/ 1/8inch Head Length : 11mm/ 0.43 inch Total Length : 45mm/ 1.8inch Can applied to hard material below: 1. sandstone and marble, granite, basalt, limestone, dolomite 2. floor tiles, glaze, underglaze, blue and white, pink ancient, wall ...Web