The Vevor boat trailer winch stand is built for trailer tongues measuring 3" wide by 3"-4" high and is designed for reliable marine use. Made from 3 mm hot-dip galvanized steel, it helps resist corrosion in harsh environments, including seawater exposure. A dual drainage design with a top cover and bottom drainage hole helps keep the interior dry and protected. The included U-bolt enables secure installation and stable towing performance. It is suitable for use with jet skis, fishing boats, sailboats, and speedboats.