Thanks to the unique clamp-on design, this CE Smith Pontoon Square-Rail Clamp-On Adjustable Rod Holder fits the square rails on your pontoon boat. The angle around the rail is infinitely adjustable, and the left and right angle can be adjusted in 15 increments. Plastic insulator sleeves provide a snug fit on the rail. UV-resistant PVC liner protects your rod from wear and tear. Solid bottom with drain prevents water from pooling. Made of 316L stainless steel with a chrome-zinc alloy clamp for long-lasting performance. Includes mounting screws, hex key for angle adjustment and two insulator sleeves one to fit 1 square rails and one to fit 1.25 square rails. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Rod Holders.