Bulldog-Fulton 5/8"D Trailer Hitch Pin w/Keyed Lock 580401 69-8438

Dogbone pin is used with class III/IV hitch. Simple & secure, our receiver lock keeps your truck & trailer connected. The solid stainless steel pin fits crosswise into the hole on your receiver with a deadbolt securing it in place. Good luck detaching this thing without the key. It includes a dust cap.