Features 1、Low Cut Resistance: With strong toughness and wear resistance, low cut resistance, and increase opening speed 2、1/4in Hex Shank: 1/4in hex shank can be installed in electric drills and electric drills, and can be quickly released 3、Application: Drill bit is widely suitable for ceramic, granite, ceramic tile, stone, wood, plastic, concrete wall 4、Smoother Drilling: This is cross drill bit, which drills faster and smoother, saving your time and energy 5、Fine Function: This is cross drill, which has fine function, non burrs, and brings you a wonderful experience Specification Item Type: Cross Hex Drill Bit Material: Carbide Blade Diameter: Approx. 3mm / 0.12in, 4mm / 0.16in, 5mm / 0.20in, 6mm / 0.24in, 7mm / 0.28in Shank Diameter: 1/4in Hex Shank Uses: For openings glass, concrete, cement walls, etc. Package List 5 x Drill Bit