Etrailer Yellow Coupler Lock 2 5/16″

This steel coupler lock is built for 2-5/16″ ball couplers, finished in high-visibility yellow. It fits over the coupler like a hitch ball, and a quarter-turn of the key drives a locking pin into the coupler’s ball socket so it can’t be dropped onto a ball or hitched up without the key. A shuttered keyhole keeps out dirt and moisture.