Online Parts Store › Seachoice Chrome Plated Plastic Thru-Hull Image 1 of 1 Seachoice Chrome Plated Plastic Thru-Hull $14.68 Use in place of stainless steel thru-hulls. Not recommended for use below the waterline. Add To Cart Added! Use in place of stainless steel thru-hulls. Not recommended for use below the waterline. You Might Also Like Seachoice 90-Degree Thru-Hull Connector, Fits 1-1/8 In. ID Hose, 1-1/8 In. Max Hull $17.65 Seachoice Thru-Hull Connector w/ Broad Flange, White Finish, 1.125 In. $10.59 Seachoice 90 Degree Plastic Thru-Hull, White $16.00 Seachoice 90 Degree Stainless Steel Covered Thru-Hull $17.04 Seachoice 90 Degree Stainless Steel Covered Thru-Hull $28.11