The RAP-394-SSTU consists of the Tough-Tube™ fishing rod holder and 2" long ratchet spline post arm. The ratcheting feature allows for the tube to tilt forward and back 180 degrees for optimum viewing angles. Ideally suited for anything from Kayaks to Tournament boats, this compact and simply design is ready for your next day on the water. Easily integrate the RAP-394-SST to your existing spline post base, or choose from an assortment of RAM compatible bases.