GREAT VALUE! 360° locking collar with hex bolt lock allow ball to neatly fold away when not in use. Gooseneck retractable ball mount has a 5000-lb. maximum vertical load; 25,000-lb. maximum gross trailer weight. You get a 2 5/16in. chrome ball, pivot, stainless steel latch spring, Grade 5 bolt kit and mounting template. Safety chain U-bolt kit includes two 5in. long, 5/8in.-18 UNF x 1 1/2in. square U-bolts, springs, nuts and washers. U.S.A.