Our Universal Tubes will fit into any cylinder shape(over 1-1/2" dia. width) similar to a rod holder. Specs: - Qty. 2 - 3-1/2 aluminum pads with qty.3 1/4" holes for backrest attachment 34" L 1-1/2" aluminum tubes welded flat to the pad Keep all of your marine accessory needs with Marine Fiberglass Direct. *All International Orders may require additional shipping charges depending on location.