Remember when you got that stubborn stripped screw out with nothing more than willpower and elbow grease Neither do we. Make a bad day better with the WEN Double-Ended Screw Extractor Set. Featuring 3 impact-rated bits that easily install in your favorite drill or impact driver, this set is perfect for automotive, assembly, or other fabrication work. Each bit has a drill on one end and an extractor on the other, making tool changes quick and easy, and is compatible with any drill chuck or standard 1/4 in. impact driver chuck. Just drill, reverse the bit, and extract the screw The tip of the drill end is designed to minimize walking, and the tip of the extractor end is serrated for extra bite. Combined with the cold-forged hardened M2 tool steel construction and corrosion-resistant black-oxide finish, these bits are designed for durability and performance. Recommended for use with 4 to 14 screws and 10-12 to 5/16 in. (M5 to M8) bolts. Remember when a busted bolt was no biggie, Remember WEN.