"Bestop offers Jeep Wrangler Fuel Doors machined from billet 6063 T-6 aircraft aluminum. Easy, no-drill installation uses existing mounting points and hardware. Available in Black Powder Coat or Brushed Aluminum, Bestop Jeep Wrangler Fuel Doors are corrosion-resistant and provide years of smooth, trouble-free operation."

(taken from the Bestop Website: www.bestop.com)