Super Strength Tube Rope This super strength 16 strand, 7/8 inch x 60 foot tube tow rope is rated at 6,000 pounds tensile strength! It's the strongest tube rope your money can buy, and is engineered to pull 5 riders. The "killer bee" color scheme is easy to spot in any water conditions. A Rope Keeper is included for tangle-free storage. Great for towing boats too!