All steel, raw. Parts with two patterns listed are dual bolt pattern wheels. Inside nubs for 17" & 18" caps measure 7"; all other sizes have nubs that measure 7 1/2". C52 is only cap to fit 20". Image shown with custom yellow powder coat, trim ring & 1947-53 Chevy cap for Smoothie, not included. Direct bolt options (5x4.5) do not have nubs for hubcaps; only available caps for these are Spyder (C113450) & Push Thru Bullet (C115). Custom powder coat options ($35/wheel) will display once part number is selected in dropdown menu. NOTE: 14"-18" options have a ring around the hubcap area; 20" & 22" options do not. See Series 513 for center detail photos. Doesn't fit Jeep Samurai. Cap and lug nuts not included. Please check fitment before mounting.