The standard universal Pumpout Nozzle is attached to a male 1½" Quick Clamp (camlock) Adapter so it can be interchanged with other deck adapters. The tip for this nozzle is tapered to fit all waste deck fittings with opening from 1¼" (3.18cm) to 2¼" (5.72cm). Whether the deck fitting cap is Metric thread, British Pipe thread or National Pipe thread, this nozzle will work. Made of molded neoprene, the part is extremely durable while maintaining the flexibility required for air tight seals.