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Forespar 251 Series Marelon Mushroom Head Thru-Hull Fittings are the ideal choice for thru-hull fittings on boats used in salt water because they're completely resistant to electrolysis and corrosion. Constructed of durable, high-strength Marelon polymer composite.
Fittings have a 20 lb/ft maximum torque rating and are available in two thread sizes: 3/4 inch and 1-1/2 inch, in White only.
For use above and below the waterline.
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