Perko Deck Mount Outrigger Pole Holders - #1314 Removable tubes lift and turn to three positions: vertical, fishing and lowered. Universal tubes may be used on either side. Chrome plated zinc plates, polished stainless steel tubes. Not for use with aluminum poles. Sold in pairs. Tube O.D.: 1-1/4" Tube I.D.: 1.120" Plate dimensions: 5" x 2-1/2".