Online Parts Store › Seachoice Chrome Plated Plastic Thru-Hull Image 1 of 1 Seachoice Chrome Plated Plastic Thru-Hull $12.24 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 Polypropylene Extra Long Thru-Hull Connector for 3/4 in. ID Hose, White Finish $9.84 Seachoice 90 Degree Stainless Steel Covered Thru-Hull $14.56 Seachoice 90 Degree Stainless Steel Covered Thru-Hull $28.11 Seachoice Stainless Steel Covered Thru-Hull $12.81