Included with all Ball Mounted Dollies, the Thrust Washer is an optional Adapter designed for Trailers with step-down hitches/lips. The Puzzle Piece can be inserted to increase the height of the Ball Mount to provide more surface area while tightening or removed to bypass any protrusions on the hitch.
A flush, tight connection between the ball mount and coupler. Flat, without any visible gaps. A Thrust Washer isn't required for this type of connection:
CONNECTION WITH THRUST WASHER
Required when protrusions on the hitch prevent a flush, flat connection. The Puzzle Piece can be removed to bypass imperfections on the hitch:
Price: £60 + VAT