These Deck Mount Bow Sockets are used in conjunction with battens to assemble a rounded support structure for a boat cover. Part of a system to disperse rain water to avoid water from accumulating in the center of the cover. Recessed base design accepts sealant, allowing for a watertight seal without the use of gaskets. Injection molded nylon construction. Installs with two #10 FH fasteners (not included). Available in black or white.