This is used with all boats or Ribs that have an outboard and do not have a standard single tow point, if you boat has 2 rear towing eyelets on the Transom this is for youSize:8' - Total length of ropeThe O'Brien Heavy Duty 8' Ski Tow Harness is perfect for boats without a traditional tow point. The harness has 2 Mounting Snap Hooks which attach to existing boat hardware and a Centre Snap Hook which connects to the tow rope and produces an equal pull behind the boat. | O'Brien Heavy Duty 8' Floating Ski Tow Harness / Bridle | The House