Skull air cleaner, air scoop is made out of aluminum and is hand polished to a shiny chrome like finish. Not like chrome. Fits most 4 barrel carburetors. Has a 5 1/8″ neck. Measurments are: 14″ long x 6 1/4″ tall x 8 1/2″ wide. Comes with a 6 1/2″ diameter air filter. Jaw moves.