Irwin Power Grip Screw & Bolt Extractor Set, 7-Piece a versatile solution for removing rounded off, painted over, damaged, and rusted nuts and bolts. This 7-piece set features a universal lobular design that grips both metric and SAE sizes, ensuring compatibility with a wide range of fasteners. The black oxide finish with white markings not only prevents rust but also makes the sizes easy to read. Designed for maximum gripping power, the reverse spiral flutes bite down securely for effective extraction. The shear-resistant high-carbon steel shank is larger than most fastener shanks, providing superior resistance to torsional shear. With a 1/4" hex shank, this set is compatible with cordless drills, impact drivers, corded drills, and nut runners. The power groove allows for use with quick change adapters, enhancing convenience and efficiency. Included in the set are sizes 3/16", 1/4", 5/16", 3/8", 10mm, 7/16", and 1/2", all neatly organized in a durable plastic case. Model Number: 394100