This is a NOS #13700 Fogger nozzle; the famous original NOS Fogger nozzle.   Changing power levels takes only seconds and is simply a matter of changing the fuel and nitrous jets on the nozzle; can be jetted up to 150 HP.     Includes NOS STAINLESS STEEL .018 and .026 jets for the 35 HP rating. 

Nice shape---------guaranteed 100% functional and leak free.   Fixed shipping of $4.00.    See my other auction items for more good deals on nitrous and hot rod parts--------------you can also call the shop at 702-596-2616 with questions.