Seachoice Thru-Hull Connectors With Broad Flange are made of durable, high-impact plastic to withstand the rigors of marine environments. They are ideal for use as an exhaust port for a bilge pump. 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. Made of durable, high-impact plastic to withstand the rigors of marine environmentsIdeal for use as an exhaust port for a bilge pumpFor use with a 1-inch ID hoseFits hulls up to 1-1/4 inch thickBroad 1-7/8 inch flangeManufacturer part number 50-18071