Alloy Steel Construction: Crafted from high-quality alloy steel, this drill bit offers excellent strength and wear resistance, making it suitable for drilling tile, ceramic, and glass. Four-Flute Sawtooth Design: Features a 4-flute wavy cutting edge for fast and precise hole creation, delivering clean results. Hex Shank for Secure Grip: The hex shank ensures a stable and secure fit in drills and screwdrivers, improving control and precision. Spiral Groove for Efficient Chip Removal: Designed with a spiral groove to aid in chip removal and heat dissipation, reducing the risk of jamming during operation—especially when used with hammer drills or rotary tools. Versatile Application: Compatible with impact drills, standard drills, and screwdrivers. Suitable for brick, stone, wood, and concrete. For harder materials like marble, water cooling is recommended to extend bit life. Color: As shown Material: Alloy steel Package Contents: 6-piece eccentric drill bit set (4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm) Note: Actual color may vary slightly due to monitor settings and lighting conditions. Measurement tolerance: ±1–3 mm.