Utilize an upgraded protective coating for double anti-rust defense, ensuring robust corrosion resistance in humid or challenging environments, maintaining peak drill bit performance. Benefit from a strong magnetic tip that securely grips screws, preventing slippage or falls, enhancing work efficiency, and minimizing the risk of screw damage during operations. Crafted from premium alloy steel with a remarkable 60HRC hardness level, offering exceptional impact and wear resistance for high-strength tasks, effectively extending the drill bit's service life. Explore a range of length specifications (25mm to 150mm) catering to diverse maintenance, assembly, installation needs, providing flexibility across various operational scenarios. Featuring a 1/4-inch hexagonal handle design, this drill bit is compatible with manual screwdrivers, electric screwdrivers, and drills, making it ideal for mechanical repairs, household assemblies, and electronic equipment applications. Item Name: Drill Bit Material: Metal Features: Long Lasting, Rust-Resistant, Multi-purpose Size Details: Length: 2.5cm/0.98" (Approx.) Length: 5cm/1.97" (Approx.) Length: 6.5cm/2.56" (Approx.) Length: 7cm/2.76" (Approx.) Length: 7.5cm/2.95" (Approx.) Length: 9cm/3.54" (Approx.) Length: 10cm/3.94" (Approx.) Length: 12cm/4.72" (Approx.) Length: 15cm/5.91" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: Style 9pcs: 9 x Drill Bits Or Style 12pcs: 12 x Drill Bits