1. Drill Bits Set This 13pcs set of drill bits is designed with a straight round shank, making it suitable for a variety of drilling tasks. Whether you need to drill into metals or wood, such as aluminum or iron, these drill bits are for the job. 2. Smooth and Reduced Friction The drill bits feature a smooth surface that helps to reduce friction during drilling, providing a more efficient and smoother drilling experience. The blades are specifically designed for creating precise and clean holes without any hassle. 3. Longlasting and Wearresistant Made from speed steel (HSS), these drill bits are wearresistant and have a long service life. You can rely on their durability and performance, even with frequent and intense use. 4. Compatible with Various Drilling Tools Whether you use a hand drill chuck, bench drill, radial drill, or any other similar tool, these drill bits are compatible and can be easily used with them. You'll have no trouble fitting them into your existing drilling setup.