Elite™ Accessories KitElite™ Pop-In™ Ball Kit (Includes: (1) 2-5/16" Pop-In™ Ball #19311, (1) Storage Bag, (2) Safety Chain Attachments & (1) Hole Cover)Pop-In™ Ball – Lever inside ball head activates ball bearing locking system – Lift and turn lever to unlock and remove ball; Two safety chain holders; Hole cover keeps Pop-In™ Ball sleeve free of debris; Storage bag included; Ball rated for 30,000 lbs. capacity*; Fits 2011 Ford F-250 / F-350 / F-450 with factory installed OE rail system or aftermarket rails (#30126 & #30868); Patents Pending*Your actual weight capacity is limited to the towing vehicle or gooseneck rail kit capacity.