Clamp-On Rod Holder - White Aluminum - Vertical Mount - Fits 1.900 O.D. PipeColorWhitePipe Size4Fits1.900 O.D. PipeMountVerticalJUST CLAMP THEM ON! Aluminum rod holders that are as beautiful as they are functional. With no hassle or wear and tear on your boat you can install these rod holders with only an Allen Wrench. No lengthy trips to the tower builder for custom installation at custom prices. Simply place the two halves of the clamp around the pipe, insert the bolts and tighten. Install the