General description High-quality multipurpose drill bits designed for various materials including glass, ceramic tile, wood, stone, concrete, and brick. The tungsten carbide tips ensure longer life and durability. The U-type slot features dust collection, while the 3-flat shank provides a secure grip in electric drills. Technical specifications Material: Tungsten Carbide Blade Diameter: 6mm, 6mm, 8mm, 8mm, 10mm, 12mm Color: Black + Silver Package Contents: 6pcs Ceramic Tile Drill Bits Measurement allowed error: +/- 1-3 cm Installation When drilling hard materials such as glass, porcelain floor tiles, or marble, lubrication is recommended. For best results, use the flat perforation function without exerting impact force. Maintain a moderate drilling speed and pressure to avoid damaging fragile materials. Usage Ideal for drilling holes in bathroom tiles or wall mirrors. Not suitable for drilling tempered glass or pure concrete. Other information Note: Light shooting and different