9-piece tile drill set in 7 sizes meets your needs for different hole diameters. The ceramic drill bits feature high toughness and wear resistance, offering greater durability compared to standard drills. The titanium-coated surface provides antioxidant protection and helps prevent fading. APPLICATION: Suitable for drilling glass, ceramic, tiles, and other hard, brittle materials. This glass drill bit set allows for efficient drilling and helps prevent cracking or chipping of porcelain. HEXAGONAL TILE DRILLS: The hex shank design ensures secure grip and prevents slipping during use. Compatible with most standard electric hand drills, bench drills, and other power tools. Color: Golden Tile drill bit sizes: 3, 4, 5, 6, 8, 10, 12mm Shank length: 68.6mm, 69.7mm, 75mm, 76mm, 77mm, 82mm, 84mm Tile drill shank diameter: 6.35mm (1/4 inch) Drill bit diameter: 2.5mm, 3.1mm, 4mm, 4.5mm, 5.4mm, 6.9mm, 8mm Material: Carbon steel Note: When starting to drill into glass, use low speed and light pressure to ensure control and accuracy. Note: Reducing drilling speed and pressure while increasing lubrication (water) can significantly extend the lifespan of the drill bits. Package includes: 1 x 12mm hexagonal tile drill 1 x 10mm hexagonal tile drill 1 x 8mm hexagonal tile drill 3 x 6mm hexagonal tile drills 1 x 5mm hexagonal tile drill 1 x 4mm hexagonal tile drill 1 x 3mm hexagonal tile drill Content limited to items listed above; other accessories not included. Note: Lighting and monitor settings may cause slight variations in color representation between the image and the actual item. Measurement tolerance: +/- 1-3cm.