1.This twist socket set is a tool and is specially designed for loosening a nut, which can not be done by a socket or wrench.
2.This tool is only useful for a nut with positive threads.
3.This tool can be used while a nut could not be loosened because of rust and deformation.
4.This socket set is made of AIS14340 with HRC52-55 degree handness.
Use on the damaged screws & nuts.Special spiral design for easier to remove the damaged screws.
Dr.3/8″ 8, 10, 12, 13, mm(length:32mm)
Dr.1/2″ 14, 15, 16, 17, 19, 21 mm(lenth:34mm)
2 pcs pin punched 72, 80mm