Tired of oil spilling all over when you try to add it to your motor? This new design makes it much easier to pour the oil into your motor. Made from fully polished 6061 T-6 Aluminum, its just the thing to finish off a good looking engine build. Supplied with gasket, o-ring, and 1/4" NPT -1/2" Barbed hose fitting so breather line hook up is a snap. Choose either smooth cap with knurled edge or grooved edge cap.