Reese 30134 Reese Safety Chain Attachment for Elite Under-Bed Gooseneck Hitch 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 One Safety Chain Attachment Hoop Fits with Elite Series under-bed rails Required to be DOT legal Quick easy installation Brand new in the box