Feature:1. 1/4in Hex Shank: 1/4in hex shank can be installed in electric drills and electric drills, and can be quickly released2. Wide Application: The drill bit is widely suitable for ceramic, granite, ceramic tile, stone, wood, plastic, concrete wall3. Strong Wear Resistance : With strong toughness and wear resistance, low cut resistance, and increase opening speed4. Wonderful Experience: This is drill, which has fine function, non burrs, and brings you a wonderful experience5. Faster Drilling: This is drill bit, which drills faster and smoother, and saving your time and energySpecification:Item Type: Cross Tile Drill BitMaterial: CarbideBlade Diameter: Approx. 6mm / 0.24in, 6mm / 0.24in, 8mm / 0.31in, 10mm / 0.40in, 12mm / 0.47inShank Diameter: 1/4in Hex ShankUses: For openings glass, concrete, cement walls, etc. Package List:5 x Drill Bit