Feature:1. Premium Material: These tile drill bits are made from premium boart material, which ensures hardness and durability.2. High Efficiency: These tile drill bits ensure fast drilling speed, the hole is round without breach, highly efficient.3. Wide Application: These tile drill bits are applicable to marble, ceramic tiles, wall and other stone.4. Low Resistance: These tile drill bits possess bigger chip removal opening design for lower drilling resistance.5. High Torsion: These glass drill bits provides high torsion to achieve excellent cutting strength and performance.Specification:Item Type: Tile Drill BitsMaterial: BoartOpening Diameter: Approx. 30mm / 1.18inHandle Shape: Round HandleApplication: Can be used for glass, ceramic tile, stone, floor tile, marble and so on Package List:2 xTile Drill Bits