The 3/4" axle slot offers 1-3/4" of front-to-rear adjustability and the axle plates are threaded 3/8"-24

or for Ironhead Sportsters running different rear wheels

Furthermore

Polish it up at it will look as good as chrome

22MM Power-Flo Petcock - Hex Finned Body - Chrome - Inward Ltd The 3/4" axle slot offersPingel Power Flo Fuel Valves offer Substantially Higher Fuel low than any petcock made for motorcycles! Substantially higher fuel flow compared to OEM or aftermarket fuel valve Necessary for adequate fuel delivery even on stock motorcycles and a must for high performance All descriptions are made from a seated position on the motorcycle with a reference from outlet position to the on, reserve and off position of the fuel valve lever. See diagram in