2006 Pro-Trak Trailers Dovetail 40-20 Gooseneck Trailer. VIN 5BNDG40206W001520. Tandem Axle. Steel frame with Dovetail. 48.5 Foot Total Length. Deck Length: 35 Foot. Dovetail Length: 5 Foot. Front Tool Box. 235/80R16 Rubber. Duals.