The Ambassador Marine Trap Drain Body connects to nearly any drain/waste line with 1-1/4" threads. The Drain Body screws on to all Ambassador Marine (or nearly any) drain with a 1-1/4" threaded male fitting.• 1-1/4"-F thread (top port)• 1-1/4"-M thread (side port)• Easy trap access• Heavy-duty plastic Heavy-duty plastic construction