Attwood stainless steel rod holders are available in 30?, 15?, and 0? configurations. Features a U.V resistant polymer liner that protects the finish on rod and reel and a U.V. resistant cover cap/gasket that closes the tube when not in use. Oval flange.Open-end series for most open water applications.All closed series rod holders include drainage opening for 14-18 NPT fitting for installation in enclosed gunwales.