These are the Left and Right Exhaust Headers for the AquaCraft UL-1 Superior FE Hydro RTR 2.4GHz (AQUB20**). FEATURES: Nylon construction, black in color Non-functional INCLUDES: One Left and one Right Exhaust Header Four 2x5mm Phillips Head Screws REQUIRES: Installation on the boat cnh 12/18/08 ir/jxs