1-3/8 Inch Electroplated Diamond Bit 8 mm Shank, Hydro Handle, Mfr#: HH138BIT

HYDRO-HANDLE diamond drill bits are recommended for precise drilling of tile, glass, stained glass, granite, marble, onyx, quartz and other hard materials including precious and semi precious material such as garnet, amethyst, aquamarine, emerald and tanzanite.