Highly Polished Stainless Steel ¦Great looks and No Rust! Stronger with more durable finish that won't dull like polished Aluminum. Available in 5 lengths, 8" and 10" Diameter and include Polished Stainless Steel Straps (2), Stainless Steel Hardware and gas cap. Please note that the neck on the tank does not allow for the two caps to interchange. Units being shipped with the S/S caps are noted. (Off-Road Use Only)