Chrome lug nut for alloy or mag style of wheels with a built in washer. This lug nut will fit alloy wheels found on later 280z and 280ZX cars as well as some of the earlier alloy wheels. These lug nuts have a total length of 1.5" and a shank diameter of .720" (18mm). standard M12-1.25 threads. There are two different sizes of mag style lug nuts, so please check the measurements to be sure this size is correct.