Provides a fuel system with efficient ventilation and flush-mount design presents a clean, finished look Made of 316 corrosion-resistant Stainless Steel Does not have a protruding cap as many vents do, so it is less prone to cause damage or to be damaged by impacts Vent cap unscrews with hex head wrench for easy cleaning of the filter Requires a 1 3/8-inch hole, can be used with a maximum hull thickness of up to 7/8-inch, and it is designed to connect with 5/8-inch interior diameter hose Manufacturer part number 50-23061