Effecient - Specifically designed for use with an impact driver, ensuring optimal performance in high-torque applications Effective - Features a shock-absorbing torsion design that increases torque, providing greater efficiency and durability Precision - The precision ground tips are crafted to prevent cam out and screw damage, ensuring accurate and reliable fastening Durable - Made from S2 steel, these bits are hardened and tempered for long-lasting durability Easy - Going - Each bit has highly visible laser-etched size markings on the hex shank, making it easy to identify the correct size quickly, Weight: 0.06834330122 pounds, Manufacturer: Draper