This is the optional Golden Horizon Aluminum Fuel Cap for use on the Traxxas T-Maxx 2.5 and T-Maxx 3.3 Vehicles. FEATURES: Aluminum construction Anodized blue in color INCLUDES: One Aluminum Fuel Cap REQUIRES: Installation on the fuel tank COMMENTS: Also available in Silver (GHHC2512) Golden HorizonsPart GHH02511