• Designed for unfastening damaged nuts and bolts, and especially for locking wheel nuts • The special spiral profile on the inside enables the socket to grip sufficiently for loosening in cases where standard sockets and wrenches fail • Drive: 1/2" or 3/4", depending on the profile dimension • Black phosphate finish • High performance alloy steel • Hardness: 50-53 HRC • Not suitable for machine operation • Includes 6 different sockets: 22, 24, 27, 32, 36 and 41 mm and a punch • Also sold individually