1 7/8" coupling. Approximately 1,500 lb capacity. Frame recently scraped and primed. New (August 2025) ground contact plywood deck and mounting hardware. New lights. Includes spare tire and wheel bearing protectors (Buddy Bearings). Tilts for loading/unloading. Folds for reduced storage space. Original axel replaced with higher capacity axel. 1 7/8" ball is available if needed.