These spider caps centers are just the thing to make your 6 lug steel wheels stand out. Extruded and stamped chrome plated bullet and flange with chrome plastic lugnuts for a show quality appearance. Dual fit chrome ABS lug nut cover designed to fit over 13/16 and 3/4 hex lug nuts. Covers center hole up to 4-1/4 dia. No need for any unnecessary brackets and screws. Sold individually. Correctly sized and proportioned to fit most 6-lug x 5-1/2 bolt pattern steel wheels from 1947-1972.