IF YOU WANT THE DICE, GREASY KUSTOMS, ZERO LOOK YOU HAVE TO START WITH THE RIGHT PARTS DON’T SETTLE FOR’CLOSE ENOUGH. NAS H “CREEPSTER” SOLID BRASS GAS CAP &. A GREAT CUSTOM LOOK FOR YOUR HARLEY TRIUMPH XS650 BOBBER CHOPPER. One of a kind Creepster Fill Cap f. Or weld on applications only. Comes with weld-on vent fittings for venting tank into frame. Can be used for gas or oil tank. Bungs machined out of mild steel for easy welding. Weld in vent bungs are 1/8? NPT tapered pipe thread, which is standard for most oil fittings. Width base fill spout base. Inside diameter of 1-3/8? A cool addition to any tank MADE IN USA. Add a map to your own listings.