A structure for use with a trailer tongue including two pairs of opposed sidewalls interconnected to one another to form an integral hollow rectangular structure that is adapted to receive and be secured to an end of a first rectangular tongue member. Each sidewall rotatably carrying a roller, at least a portion of each roller positioned in the interior space of the rectangular structure to substantially prevent contact between the inside surface of the rectangular structure and an outside surface of the second rectangular tongue member. The rectangular structure including a retainer for retaining a latch in a latch installed position, the retainer permitting selective actuation of the latch between the latch installed position and a latch uninstalled position by hand.