High-quality carbide-tipped alloy head material with increased hardness. Carbide drill bits are designed to last longer and maintain sharpness better than standard steel drill bits. U-type slotted design allows for fast drilling and efficient dust removal. Triangular handle design ensures stable operation. Suitable for a wide range of materials including porcelain, ceramic tiles, glass, mirrors, plastic, masonry, and wood. When drilling hard materials such as concrete, brick, glass, porcelain tiles, or marble, use water for lubrication to extend bit life. Set includes 7 different sizes: 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, and 12mm. Features a 3-flat shank design for secure grip and high drilling accuracy. Rotating thread design enables smooth drilling and chip removal. Spear-pointed tip provides precise starting, stable drilling, fast speed, clean holes, and reduced risk of bit breakage. The 3-flat shaft prevents slipping and helps protect tile glaze from damage. Color: Black + Silver Material: Carbide Package Contents: 7 x Drill Bits (3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm) Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.