This is a lug nut for most Fiat and Lancia cars. 12x1.25 thread pitch. 11/16 shank, 3/4" long, 13/16 hex head for easy installation. Beautiful chrome finish. These are for use on cars with aftermarket alloy wheels that require a shouldered lug nut / stud combination. Not for use on wheels with 60" taper-seat lug holes.