Features Easy Drilling: Adopting vacuum brazed diamond , the drilling bit ensures higher working efficiency and longer service life. Perfect Match: The triangle shank not only enables fast change, but also suits for most hand drill as well as bench drill. Simple to Use: Designed for both dry drill and wet drill, not easy to slip or fall during operation, very safe and reliable. Broad Utility: Allows for wide application in drilling porcelain, tile, ceramic, granite, marble, masonry, stone and so on. 5Pcs in Total: There are 5pcs dry drill bit in different diameter, which will satisfy your work needs for various material. Specification: Item Type: Diamond Drill Bit Product Diameter: Approx. 6mm / 0.24in, 8mm / 0.31in, 10mm / 0.39in, 12mm / 0.47in, 14mm / 0.55in Sand Band Width: Approx. 10mm / 0.39in Product Total Length: Approx. 65mm / 2.56in Product Colour: Red Package List:1 x 6mm Diamond Drill Bit1 x 8mm Diamond Drill Bit1 x 10mm Diamond Drill Bit1 x 12mm Diamond Drill Bit1 x 14mm Diamond Drill Bit Package List 1 x 6mm Diamond Drill Bit 1 x 8mm Diamond Drill Bit 1 x 10mm Diamond Drill Bit 1 x 12mm Diamond Drill Bit 1 x 14mm Diamond Drill Bit