The Scotty Round Rail Mount Adapter is excellent for pontoon boats and round rails found on some kayaks and canoes. The Round Rail Mount Adapter allows you to position your Scotty rod holder anywhere on your rail, and provides versatile mounting without having to drill more holes in your boat. Stainless steel fasteners (included) hold this tough mount securely in place. Works with all Scotty post mount rod holders. This mount can also be converted to a square rail, Mounts on 1 1/4 in. rails - round or square, Stainless steel fasteners, Works with all Scotty post mount rod holders, Allows for mounting a rod holder without drilling, Model Year: 2017, Product ID: 430426, Model Number: 245a, GTIN: 0062017002453