Stud Driver Set 6/8/10/12Stud Driver and Remover Set Includes 6, 8, 10, 12 mm For rapid fitting and removal of stud bolts with or without thread. No damage to bolt through welding on of turning aids (nuts, etc.) or use of pliers. No lock nuts needed. Positive grip on studs from 10mm long. No wearing parts. Diameter 25mm, 65mm long. Applications: All motor vehicles, agricultural and building machinery maintenance, fleet operators, motorcycle dealers, motor and mechanics;