*Description*100% Brand new and high quality.No need to add water, you can drill to the bottom in one click.Main Features➊HIGH-QUALITY MATERIALSIt is made of high-quality YG6X alloy as raw material. The process of oxynitride of the cutter head strengthens the drill hardness.➋SURFACE ELECTROPHORETIC PAINT PROCESSFull-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.➌UNIQUE CROSS ANGLE DESIGNSmall incision resistance，feature drilling stably, fast speed, not breaking the border. Opening neat, smooth, no broken edges, no tremor phenomenon, chip easily.➍WIDE USAGEProfessional glass and tile drill bits provide smooth and accurate drilling in ceramic tiles, marble, thin iron plates, mirrors, and glass. Remember to add water or coolant when drilling.➎5 DIFFERENT SIZESSuitable for your different needs. It Can be installed in the general electric hand drill, bench drill. The machine drill clamp range is 10mm and above.SpecificationsMaterials: Cemented CarbideColor: Black/Silver/CopperProduct Size: 3*70/4*70/5*76/6*77/7*80MMPackage Contents: Universal Drilling Tool(5PCS)*1*Notice*1. Manual measuring, please allow 0.1~ 0.5cm error,thank you.2. Due to the difference between different monitors, the picture may not reflect the actual color of.