FEATURES: 1. High-Quality Materials: Made from premium YG6X carbide alloy. The cutting head uses an oxynitriding process for exceptional hardness and durability. 2. Electrophoretic Surface Coating: Features a complete anti-rust treatment for a clean, sharp finish without burrs. Fully automated polishing ensures each drill bit is consistently smooth and wear-resistant. 3. Unique Cross-Angle Design: Reduces cutting resistance for stable, fast drilling. Creates neat, smooth openings without breaking edges, shaking, or chipping. 4. Wide Compatibility: Professional-grade bits deliver smooth, precise drilling in ceramic tile, marble, thin iron plates, mirrors, and glass. Remember to use water or coolant during drilling for best results. 5. Reliable Performance: Engineered for efficiency and longevity, making it a versatile tool for various drilling tasks. PRODUCT DETAILS: This universal carbide drill bit set is built for high-hardness materials. The YG6X alloy construction and specialized oxynitriding treatment enhance durability and cutting performance. The electrophoretic coating prevents rust and ensures a burr-free finish, while the cross-angle design allows for stable, fast drilling with clean results. Suitable for tiles, glass, marble, and thin metal plates. Always use water or coolant to prolong bit life and improve drilling accuracy. SPECIFICATIONS: - Material: Carbide (YG6X Alloy) - Size: 12mm - Package Includes: 4-piece universal drill bit set Note: Slight variations in measurement may occur due to manual sizing. Product color may appear slightly different due to monitor and lighting effects.