??Lock Nut Removal Set: The lock nut has a deep internal thread that attaches to the outside of a wheel nut so that it can be removed. The lock nut removal set is ideal for those who have lost their security bushings as the 4 sizes cover the most common ones used in the automotive industry. The set can also be used to remove corroded or chipped nuts. Secures wheel nuts with strong force and impact resistance. High-strength chrome-molybdenum steel, inverted spiral grooves are designed to bite to provide gripping power. Design: The spiral sleeve design allows for a secure connection with the round bit that is pulled out 1/2\" square drive: The pull bits have flat hexagonal inserts for use with open-end wrenches, pliers, adjustable wrenches, sockets or gripping pliers, 1/2\" square drive for use with hand ratchets, impact wrenches and air ratchets. The screw removal set includes sizes 17 mm, 19 mm, 21 mm, 21 mm, 21 mm and 21 mm and 222 mm. Comes with a practical case for quick and easy storage. .Multifunction: The twist socket wrench set is suitable for removing rust and scratches. as well as for covering painting of nuts, screws. The bolt extractor provides maximum grip to easily remove broken, damaged or rusted nuts, bolts and screws.Number of parts supplied: 1 set\"