This is a lug stud to fit steel wheels, along with aftermarket alloy / mag wheels on Fiat 850 and 600 cars.
12x1.5 thread pitch, approximately 45mm (1.75") overall length. Good for use with steel wheels, or aftermarket alloy wheels that use shouldered style mag wheel lug nuts.
Not recommended for alloy wheels with standard taper seat lug nuts, as they are not long enough for proper engagement of the nut.
Hex head for easy installation.
New and unused.