Features: 1.HIGH-QUALITY MATERIALS: It is made of high-quality YG6X alloy as raw material. The process of oxynitride of the cutter head strengthens the drill hardness. 2.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. 3.UNIQUE CROSS ANGLE DESIGN: Small incision resistancefeature drilling stably, fast speed, not breaking the border. Opening neat, smooth, no broken edges, no tremor phenomenon, chip easily. 4.WIDE USAGE: Professional 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. 5.5 DIFFERENT SIZES: Suitable 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. Notice: Please allow 1-3cm deviation due to manual measurement Actual color may be slightly different from the image due to different monitor and light effect Description: Material:YG6X alloy Size:as shown includes: 5/10/15x Drilling Tool