Alloy Steel Construction for : Crafted from high-quality alloy steel, this drill bit is exceptionally and to wear, making it suitable for a wide range of drilling tasks, including tile, ceramic, and glass. Four-Flute Sawtooth Design for Swift & Precise Drilling: Our Four-Flute Sawtooth Eccentric Drill Bit features a 4-tooth wavy pattern that ensures rapid and accurate hole creation, delivering clean results every time. No-Slip Hex Shank for Secure Grip: The drill bit's hex shank provides a stable and secure fit in drills and screwdrivers, enhancing control and precision. Its further boosts drilling efficiency, making it ideal for concrete and cement applications. Spiral Groove for Efficient Chip Clearing: Equipped with a spiral groove, this drill bit effectively keeps cool while expelling debris, minimizing the risk of jams and ensuring smooth drilling operations, especially when paired with hammer drills or rotary tools. Versatile Application Across Multiple Surfaces: The Four-Flute Sawtooth Eccentric Drill Bit is compatible with impact drills, regular drills, and screwdrivers, effortlessly cutting through brick, stone, wood, and concrete. For harder materials like marble, water cooling is recommended to extend drill bit lifespan. Color: As Shown Material: Alloy Steel Package Contents: 6 * Eccentric Drill Bit Set(4+5+6+8+10+12mm) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.