I don't know what to call what I'm looking for but here goes. We are going to fill the rear tires on the Tractor with either washer fluid or antifreeze and I'm looking for a fitting that I can put on the valve stem and hook to a tube/hose. Anyone got any idea what you'd call that? All I can think of is either a brass hose fitting or something like on the tire changer machines that have a quick release.