❀Drive Bit Power Drill Socket Driver Extension Adapters 1/4inch, 3/8inch, 1/2inch. ❀Make of high strength alloy, wear-resistant, impacts resistant, ensuring long term use. ❀The product has a high degree of bites and can effectively reduce the degree of screw damage. ❀Used for installation on tools such as electric hammer drills, impacts drills, rechargeable drills. ❀This set is perfect for your impacts driver or drill, and allows you to replace your ratchets with a power tool.