Useful for maintaining proper fuel flow during use and while filling, Seachoice Thru-Hull Fuel Tank Vents are constructed of durable, polished chrome-plated cast brass. This is a straight vent that fits 9/16-inch or 5/8-inch hose. Seachoice is committed to delivering quality marine accessories and OEM replacement parts to satisfy fishing, boating and watersports enthusiasts worldwide. Seachoice is run for and by boaters, offering a wide-ranging product line while remaining affordable.