This is a fill cap from a gear lube bottle. and about 1.5'-2' of clear rubber hose. the cap can be used on any quart bottle. You can use safety wire, bailing wire or a zip tie to secure the hose to the cap. The hose is still small enough to fit in the fill plug of the trans and rear diff. and the hose also allows you to hold the bottle upside down even though you cant get it high enough to shoot it straight in. The gear oil is a little thick. But it still works.