C.E. Smith Square Rail Adjustable Clamp-On Rod Holder Pontoon. Each rod holder comes with 2 protective liners one to fit 1" and one to fit 1-1/4" square rail. The liners are round on the outside allowing the rod holder to be adjusted to any angle above the water and the hidden left or right adjustment allows even more adjustment choices. Specifications for C.E. Smith Pontoon Square Rail Adjustable Clamp-On Rod Holder: Manufacturer: C.E. Smith Color: Black Features of C.E. Smith Pontoon Square Rail Adjustable Clamp-On Rod Holder Their clamp fits 1" to 1-1/4" square rail Made from 304 stainless steel tube lined with a UV resistant black PVC and fitted with a chrome zinc alloy adjustable clamp Angle around the rail is infinitely adjustable Angle to the left or right adjusts in 15 degree increments 9" tall tube with 1-5/8" ID Includes 304 stainless mounting screws and the hex key needed to make the angle adjustment and to tighten the clamp in place. Package Contents: C.E. Smith Pontoon Square Rail Adjustable Clamp-On Rod Holder 304 stainless mounting screws The hex key C.E. Smith 55108A: Square Rail Adjustable Clamp-On Rod Holder Pontoon