Trail King's commercial detachable gooseneck double drop extendable is engineered to accept four interchangeable gooseneck styles, which makes it the most versatile hauling platform in the commercial range. Decks extend from as short as 28'9" closed out to 59'6", on an overall length of 52'11" closed. Trail King states it comes with the most standard equipment of any trailer of its kind on the market.