These heavy-duty fenders feature maximum resistance to rupture thanks to the two multiple solid ropes reinforced with brackets. Tested for durability and flexibility at temperatures from -30°C to +50°C, they offer high abrasion resistance and high energy absorption (up to 3.8 tons for the F-13 model), making them suitable for vessels up to 1500 tons (F-13). Besides their essential use on recreational boats, the cylindrical fenders of the F series are widely used by ferry boats, fishing vessels, and commercial ships.