Suitable for use on tamper resistant clutch screws. Sizes: 5/32”, 3/16”, 1/4" x 195mm long; 5/16” x 255mm long. Manufactured from chrome vanadium. These fixings can be found on older GM and other vehicles, they are also used on some number plates. For clutch head number plate screws please see Connect Part Nos. 30336, 30633, 30634 and 30635.