Efficient Universal Drilling Tool

No need to add water, you can drill to the bottom in one click. Universal various materials, efficient drilling. Main Features ➊HIGH-QUALITY MATERIALSIt is made of high quality YG6X alloy as raw material. The process of oxynitriding of the cutter head strengthen 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 plate, mirrors and glass. Remember to add Water or coolant when drilling. ➎5 DIFFERENT SIZESOne set includes: 3mm, 4mm, 5mm, 6mm, 7mm. Suitable for your diff