HIGH QUALITY MATERIALS: Made from high-quality YG6X alloy. The cutting head undergoes an oxynitriding process for enhanced hardness. ELECTROPHORETIC SURFACE TREATMENT: Provides complete anti-rust protection. Clean, sharp edges without burrs. Increased wear resistance and durability. Fully automated CNC polishing ensures consistent finish. UNIQUE CROSS-ANGLE DESIGN: Reduces cutting resistance for stable, fast drilling. Delivers clean, neat holes with smooth edges, minimal chipping, and no vibration. WIDE USAGE: Suitable for professional drilling in ceramic tiles, marble, thin iron plates, mirrors, and glass. Use with water or liquid cooling during operation. COLOR: 8mm (4pcs) FEATURES MATERIAL: Cemented Carbide SIZE: 8mm PACKAGE CONTENT: 4-piece universal drilling tool set NOTE: Slight measurement deviations may occur due to manual measurement. Actual item color may vary slightly due to display and lighting differences.