UNIQUE DESIGN - The pottery drill bit is designed with a double-threaded U-groove, which is smooth and flat to remove chips effectively. 3-angle handle adjustment makes the glass drill bit more stable on the electric drill and prevents slipping. Performance–The glass drill bit is made of high-strength alloy with low resistance to the cup. The surface of the tile drill bit is fully ground, anti-rust and high hardness. WIDE APPLICATION - The tile drill bits can be installed on hand drills, drill stands and electric drills. Tile drill bits can be used to drill glass tiles, ceramic tiles, plastics, wood, fine metals, jade, seashells and more. PLEASE NOTE - When you drill with a tile drill, it should be drilled from slow to fast, and the electric drill should not be pressed too hard. When drilling hard materials, please add water to cool down, in case the drill bit works too long and the temperature is too high to damage the drill bit. Value Glass Drill Bit Set - 6 drill bits in 4
