The Dual AN-10 Inlet Performance Catch Can gives you maximum filtration with a 100 micron filter disc that prevents particles from escaping the catch can. The filter disc can be used both in atmospheric and recirculating setups. No external filter is needed when using atmospheric setup. That makes this the first catch can that can be used both for atmospheric and recirculating setup without adding an external filter on top. The unique Internal Billet Filtration Unit in combination with Nuke's recessed filter disc gives you an extremely rigorous filtering of your crankcase gasses. The ???IBFU??? includes stainless steel filtration media maximizes condensation of the contaminations within the gasses without any or minimum flow loss. A 1/4 G drainage outlet is included for fast and easy drainage. A stainless steel bracket which is infinitely rotatable at 360 degrees is included. It comes with three 7/8 AN10 fittings, one 7/8 plug, one outlet fitting for atmospheric use and 1/4 drainage plug.