5 pcs tile drill bits multifunctional drilling Specification: Material: YG6X Alloy Surface Treatment: Titanium coating Size: 3mm (73mm length), 4mm (73mm length), 5mm (75mm length), 6mm (81mm length)8mm (83mm length) Hex shank diameter: 6.35 mm (1/4") Notes: Add water to the lubricant when drilling to prevent overheating. There may be a slight deviation of 1-3 cm in dimensions due to measurement manual. Actual color may slightly differ from the picture due to different monitor and light Delivery quantity: 5 pieces Product color: baked yellow Product size: 3mm, 4mm, 5mm, 6mm, 8mm Note: manual measurement, please allow 1-3cm error Features: Four edge pattern: Carbide tip drill bit set The sintered drill bit is equipped with a cutting head and a non-slip hex shank drill bit, which can be fixed to the drill bit more firmly and achieve an accurate drilling position, which allows for easy use. . The cutting head oxyniot process enhances the hardness of the drill bit. Unique angular crosscut design: Low cut resistance? stable drilling, fast speed, no frame breaking. Neat, smooth opening, no edge cracks, no vibration, easy to lay. Wide application: Professional glass and tile drill bits ensure smooth and accurate drilling in ceramic tiles, marble, thin iron tiles, mirrors and glass. Remember to add water or coolant when drilling. Suitable for different needs. It can be installed in general hand drills, bench drills. The clamping range for the machine drill is 10 mm and more.