This twist socket set is specially designed for removing rounded nuts bolts and studs. As you turn the socket anti clock wise the spiralled cutting blades grip and remove the nut or stud.
Sizes: 17, 19, 21 and 22mm
Drive: 1/2″ Square
With 12mm straight bar
Protective glasses must be worn when using this product
Keep sockets free from dirt and solvents to prolong life.