Lee’S Tackle Ra5004Bk Clamp-On Rod Holder Black Aluminum Vertical Mount Fits. Clamp-On Rod Holder – White Aluminum – Vertical Mount – Fits 1.900 O. Pipe Color:Black Pipe Size:#4 Fits:1.900 O. Pipe Mount:Vertical JUST 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 them wherever you like. If later, you don’t like the position, simply move them. These Rod Holders are the perfect solution for boats with wiring or hydraulic lines inside their tower legs. Now you can install Rod Holders on your Tower, Hard Top, T-Top, Radar Arch, Rails, Poling Platform or any structure made from standard size aluminum pipe. All Holders come lined with a heavy duty white vinyl insert. The Clamping portion of the Rod Holder is precision made for an exact fit. Four Marine Grade Stainless Bolts assure an even clamping pressure and a secure bond. The clamp is welded to the tube with either a fin or an oval rod for maximum strength. The completed Rod Holder is then meticulously polished to a mirror finish. These holders are designed primarily for storage but may be used for light tackle trolling.