Alloy head material with stronger hardness. Triangular shape design, operation more stable. Fine grinding of the drill body, big slot design, conducive to chip removal, to the tile wall. Easy to install, ordinary drill, drill can be installed, easy to carry and decorate. Wide applicability of glass, ceramic tile, marble, cement wall, plastic, wood, etc. Features - Color: Orange. - Material: Alloy. - Size: 12.00X0.70X0.70cm/4.72X0.28X0.28in - Alloy materials, easily switch between drill and drive bits in seconds, never change a bit in the middle of jobs again. - for drilling holes in bathroom tiles, or wall mirrors. Once it drills through the tile or mirror this drill bit will cope easily with any masonry behind it. - Carbide with a reinforced head that prevents bit cracking and provides a longer life. - U type slot design with fast drilling , flats allows drill bit to be held tightly and stably in power drill. - Easy to operate when drilling hard material (glass, porcelain floor tile, marble or granite), please use water for lubrication. Package list: 1 x 4cm drill bit 1 x 5cm drill bit 1 x 6cm drill bit 1 x 8cm drill bit 1 x 10cm drill bit