12mmx1.50 Cragar style standard mag style lug nuts including washers that fit Cragar SS wheels, etc. These lug nuts fit other custom replacement cast or forged aluminum wheels that are between 11/16" and 7/8" thick at the stud hole. The shank length is 0.75" (19mm) and the total length is 1.57" (40mm). Please refer the following drawing for exact specification and size. Visit our application guide page for any application related information. Contact us for any questions. Sold in each piece.