The RAM ROD Fishing Rod Holder with 6″ Spline Post is made of high-strength composite and has a 6″ spline post, making it a must-have for the fishing enthusiast. Designed to mount vertically in your boat, you can rotate the rod holder 360-degrees, while tilting the cradle forward and back for the optimum angle. This fishing rod holder is compatible with a variety of spline post bases and backed by a lifetime warranty.