RAVE 1-4 Rider Heavy-Duty Tow Harness Tow Harness  Heavy Duty 12 1-Section 4-Rider Tow Harness w/6 Float - 5/8 Dia., 16-Strand , 4,100 lb. Tensile Strength Meets or Exceeds WSIA 5,000 lb. Tensile Strength Steel Hooks - Heavy Duty Quick Connect Tow Point The Airhead Heavy Duty Tow Harness is the way to go to make sure you have a blast on the water this summer.