This part connects the trailer with a round tow bar to the hitch. It attaches inside the tow bar and locks in place inside the hitch using a retaining pin (Standard Forged Hitch & Steel Hitch) or bolt and nut (Classic Hitch). This flexible connector can stretch easily to allow the rider to lay down the bike. Includes safety strap with retaining pin for use with the Standard Forged Hitch or Steel Hitch. If being used with the Classic Hitch the Classic Hitch Safety Strap (part 950067) will also need to be purchased.