245 1 1/4" Round Rail MountExcellent for pontoon boats. Position your Scotty rod holder anywhere on your rail. 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. Fits 1 1/4" round rail Product : SCOTTY RAIL MOUNTING ADAPTER BLACK 1-1/4 SQUARE OR ROUND Manufacturer : SCOTTY Manufacturer Part No : 245 UPC : 062017002453.