Buy a Oregon Bar Chain Xtender online. For more information or to view another chain & accessories product, click next item. To return to where you were before, use the current page links below. chain & accessories and other boating equipment and supplies can be found at BoatingMarina for a discount! Scroll down for price, descriptions, reviews and more. Shop at BoatingMarina online and avoid the run-around often required for hard to find boating gear. Use our Product Search tool to locate specific marine parts and equipment. Thank You for shopping at BoatingMarina!