3/8NPT Composite Filter Head, Clear Site Bowl Kit; Filter head, sight bowl and canister w/plugs for filter head Bowl and filter head are reusable! Extends the life of filter by draining collected water from fuel system. Easy turn thumb screw ensures a positive grip during draining of bowl. Drainage bowl is manufactured from UV protected resin. Protect fuel systems from water and other contaminates. Provides cleaner fuel critical for today's engines to operate at optimum performance. Will not separate 2-cycle oil from gasoline. High performance 3/8 NPT ports offer lower pressure drop rates.