Trimax TM3123 Chrome TS32 Universal Receiver Lock & TC123 Adjustable Coupler Lock

Easy operation. 1/4 turn locks & unlocks head. Can't pop open or be falsely locked. Exclusive design incorporates O-Rings and water tight cap to help seal out dirt and corrosion in the lock head mechanism. Full length solid forged lock pin can't pull out.Fits Class III trailer receivers (2" x 2").