Hitch Locks With Keys CZC AUTO Trailer Coupler Lock 1/4 Inch - Chrome Coated Tongue Lock For Boat & RV Trailer Hitch Lock Pin 1/4 Inch How To Operate Our Trailer Tongue Coupler Lock: Spinning the flat key 5-7 times to open or close the hitch lock. The hitch lock is coated with black electrophoretic paint to prevent corrosion. CZC AUTO Black Trailer Hitch Coupler Lock, Dia 1/4 Inch, 3/4 Inch Span for Tow Boat RV Truck Car's Coupler CZC AUTO Black Trailer Hitch Coupler Lock, Dia 1/4 Inch, 3/4 1 Pack It comes with a 1/4 inch diameter and 3/4 inch span, making it perfect for Tow Trailer Boat RV Truck Car. The small size makes it easy to carry and operate with... 1/4 Inch diameter tongue lock pin with effective length 3/4 Inch. Security Of Our Coupler Locking Pin: This trailer lock is made of high-strength steel to deter theft. Please verify dimension and length of the pin you want before purchasing our coupler hitch lock pin. Coupler Locking Hitch Pin's Application: Tow Trailer Boat RV Truck Car CZC AUTO, a reliable brand in Hitch Sercurity Industry, we offer 30-day money-back for any reason, 12-month warranty for quality-related issues. How To Operate Our Trailer Tongue Coupler Lock: Spinning the flat key 5-7 times to open or close the hitch lock. Security Of Our Coupler Locking Pin: This trailer lock is made of high-strength steel to deter theft. The hitch lock is coated with black electrophoretic paint to prevent corrosion. Coupler Locking Hitch Pin's Application: Tow Trailer Boat RV Truck Car Small size for easy carrying.