5/8 Inch Extra Long Heavy Duty Trailer Locking Pin Set Receiver Hitch Lock With Anti-Rattle, W9C6 - Walmart.com
2" Heavy Duty Trailer Hitch Cover
TowSmart ProClass Heavy Duty Coupler Lock 9006 - The Home Depot
Universal Heavy Duty Hitch Lock Caravan Trailer Ball Coupler Trailer Lock Heavy Duty Hitch Anti-Theft Lock Yellow - AliExpress
Amazon.com: Prosecurloc 2 Pack Heavy-Duty Trailer Hitch Coupler Lock with Keys and Cap, Dia 1/4 Inch, 3/4 Inch Span Trailer Tongue Coupler Lock for Truck Trailer RV Boat Tow Car : Automotive