General description These 6 Pcs Glass Tile Drill Bits are designed for drilling through various materials including glass, tiles, ceramics, plastics, wood, thin metals, jade, and shells. The set includes four different sizes: three 6mm bits, one 8mm bit, one 10mm bit, and one 12mm bit, providing versatility for different drilling needs. Technical specifications Sizes included: 3 x 6mm, 8mm, 10mm, 12mm Material: High strength alloys Design: Double-threaded U-groove for effective chip removal Surface: Rust-proof with high hardness Compatibility and accessories Compatible with hand drills, drilling machines, and electric drills Installation Ensure the drill bit is securely attached to the drill before use Usage Drill slowly and avoid excessive pressure on the drill bit Add water when drilling hard materials to cool the bit and prevent damage