Reese Towpower® 7033200 Class-V Barrel Style Receiver Lock, Fits 5/8” Pin Holes3 1 2" span for 2 1 2" square tube receiver hitches. Fits 5 8 pin holes. Push button lock mechanism. For use on Class V receivers. Rubber cap keeps dirt out. Bend proof tubular key. 3 1 2" span for 2 1 2" square tube receiver hitches Fits 5 8 pin holes Push button lock mechanism For use on Class V receivers Rubber cap keeps dirt out Bend proof tubular key. WARNING: Cancer and Reproductive Harm www. P65Warnings. ca. gov