Super Duty Inflatable Yacht Fender – 18in x 42in – Black. The Super Duty inflatable yacht fenders are built to last. We use 30% heavier material and 15% higher tensile strength than the competition. Our fenders are also 50% more abrasion resistant and twice as tear resistant than the best-selling competitive brand. Features: Webbing exceeds 4500 lbs. tensile strength. Heavy-duty spring actuated valve with quarter turn lock for easy inflation or deflation. Welded seams have no glue to harden or breakdown. Yacht Size: Up to 75FT.