This is a high quality replacement for the front (handle) section of a two pipe (tongue) dolly. Mine is type 4.2 (double tongue and separate/single handles). The trailer hitch adapter is a replacement for the entire front section of the dolly from the plastic 60 degree clamps forward. My adapter did NOT come with plastic end caps or a ‘through’ handle. The separate handles from the type 4.2 dolly do not fit the new adapter, so I will be making a modification if I want handles or end caps. Other than that, the materials provided are of the same quality as the original dolly.