Made from stainless steel type 316, this 4-hole side mount provides marine-grade performance. This side deck plate is mounted on the side of the boat and used to install a bimini or boat top. This bimini side mount is furnished with a 5/16" hex center bolt. It features four holes that fit #10 screws (mounting screws not included). This 4-hole boat top side mount is commonly paired with eye ends. Built to last, this mount plate will keep its hold.