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 Chrome Plated Plastic Thru-Hull $12.24 Seachoice Covered Thru-Hull Fitting w/ Stainless-Steel Flange, Fits 3/4 In. ID Hose $13.32 5/8" White Plastic Thru-Hull w/Broad Flange $5.23 Seachoice Mega-Flow Dripless Thru Hull Fitting, 316 Stainless Steel, Fits 5/8 in. Hose, 1-1/2 in. Max. Hull $74.07 Seachoice 90-Degree Thru-Hull Connector, Fits 1-1/8 In. ID Hose, 1-1/8 In. Max Hull $17.65