Prevent trailer towaway theft with this corrosion-resistant, nickel-plated lock. Universal trailer coupler lock-Fits both 1 7/8" & 2" trailer couplers Lock is located on front for easy accessibility. Locks into coupler preventing hook up. Fits: Reese, Fulton, Valley, Attwood, Putnam, Marvel, Ideal, Acme, Dutton Lainson & UFP couplers-Master 1K/1092/M1 keyway. Includes 2 keys