Features: 1. HIGH-QUALITY MATERIALS: Made of high-quality YG6X alloy. The oxynitride process of the cutter head enhances 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 durable. Fully automated polishing: CNC polishing ensures consistent quality. 3. UNIQUE CROSS ANGLE DESIGN: Reduces incision resistance for stable drilling, fast speed, and clean holes without chipping or vibration. Efficient chip removal. 4. WIDE USAGE: Suitable for drilling ceramic tiles, marble, thin iron plates, mirrors, and glass with smooth and accurate results. Use with water or coolant during operation. 5. 5 DIFFERENT SIZES: Meets various drilling needs. Compatible with standard electric hand drills and bench drills. Drill chuck capacity 10mm and above. Notice: Please allow 1-3cm deviation due to manual measurement. Actual color may vary slightly due to different monitor settings and lighting conditions. Material: YG6X alloy Size: As shown in images Includes: 5/10/15x Drilling Tool