- Easy Under-Bed bolt-in installation - Rated for 25,000 lbs. gross weight capacity - Passes SAE J2638, the toughest industry standard - 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 attach directly to rail system - Fifth wheel ready uses outer four holes to mount a fifth wheel hitch - Hole cover keeps Pop-In Ball sleeve free of debris - Storage bag included - Patented and Patents Pending