🪛Drill quickly and accurately without damaging the material! MAIN FEATURES: *HIGH-QUALITY MATERIALS:It is made of high quality YG6X alloy as raw material. The process of the cutter head strengthen the drill hardness. *SURFACE ELECTROPHORETIC PAINT PROCESS:Full-grinding and anti-rust treatment, clean and sharp without burrs .The drill bit is more wear-resistant and more durable .Fully automated polishing: Polished CNC is fully automated, each one is unified. *UNIQUE CROSS ANGLE DESIGN:Small incision resistance,feature drilling stably, fast speed, not breaking the border. Opening neat, smooth, no broken edges, no tremor phenomenon, chip easily. *WIDE USAGE:Professional glass and tile drill bits provide smooth and accurate drilling in ceramic tiles, marble, thin iron plate, mirrors and glass. Remember to add Water or coolant when drilling. *MANY DIFFERENT SIZES:Suitable for your different needs.It Can be installed in the general electric hand drill, bench drill.