Seachoice Thru-Hull Connector 90degree #50-18141 Size: Hose: 1-1/8" Flange: 1-7/8" x Max Hull: 1-1/8". Hi-Impact White Plastic. Designed for use with one back nut, unlike old style 90 thru-hull with both front and back nut. Designed for easier application where hose is difficult to route. NOT Recommended For Use Below Water Line.