Made from corrosion-resistant 316 stainless steel, this 4-hole side mount brings marine-grade performance. This side deck plate is mounted on the side of the boat and used to install a bimini or boat top. The boat top side mount comes with a 1/4"-20 Phillips center bolt. It features four holes that fit #10 screws (mounting screws not included). This 4-hole bimini side mount is typically used in conjunction with eye ends. This mount plate is built to keep its hold.