4K- 60' Tow Rope. This 4K towable rope is custom-made to tow any tube up to 4 riders. This 4K rope also struts a floating foam rope buoy so the rope is easy to locate in the water.. Features:. 4100 Pound (1.86 Mg) Break Strength. Manufactured with minimum stretch design. Heavy-Duty 5/8 16-strand rope construction. Floating foam buoy. This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.