Used Utility Flatbed Trailer for sale. Features: Aluminum Head Board, Sliding Strap Winches, 10' 2" Spread Axle, and more. Coopersburg & Liberty Kenworth has new trucks, used trucks, trailers, and parts for sale. Locations: Coopersburg, PA (near Allentown), Swedesboro, NJ (near Philadelphia), and TRP 068 (Pottstown, PA).