The All Balls fuel tap repair kit is an economical way to reseal a leaky petcock. Kit includes all necessary face screws, tank bolts, face gasket, tank gasket, diaphragm, O-rings, wave washer and misc components. NBR rubber material is used on all O-rings and rubber gaskets; NBR has excellent resistance to the ethanol used in today's fuels. Sold as a kit. Notes: Non-rebuildable riveted Honda specific kits include special drill and self-taping screws along with instructions for easy and inexpensive rebuild. Kit contents will vary based on fitment.