Amazon.com: Trailer Hitch Security Lock Set Includes Universal Trailer Locks Ball Hitch Fits 1-7/8", 2", and 2-5/16" Couplers,1/2" and 5/8" Dia Dual Bent Pin Hitch Lock,1/4” Dia 3/4” Inch Span Coupler Lock :
Hyper Tough Automotive Hitch Ball Mount Security Kit, 4 inch Drop and 2 inch Hitch Ball - Walmart.com
Amazon.com: Trailer Hitch Security Lock Set Including Yellow U-Shaped Universal Ball Hitch Lock #72783, 1/2" and 5/8" Receiver Hitch Pin Lock, Golden Trailer Hitch Lock Coupler Locking Pin, Share the Same 2
TowSmart Class 3 5000 lb. "X" Mount Security Kit with 2 in. Ball, 5/8 in. Locking Pin, 3-1/4 in. Drop x 2 in. Rise Ball Mount 709 - The Home Depot
Fastway Max Security Hitch Lock 86-00-5015 – United RV
Security Nut and Bolt Kit - Mega Hitch Lock
TowSmart Class 3 5000 lb. "X" Mount Security Kit with 2 in. Ball, 5/8 in. Locking Pin, 2 in. Drop x 3/4 in. Rise Ball Mount 710 - The Home Depot
Elemake Trailer Hitch Lock - Hitch Pin Lock 5/8" Pin Tow Receiver Lock, Heavy Duty Brass Core Locking Mechanism, 3-1/2" Usable Length Fits Class III, IV, V Hitches – EleMake
InfiniteRule Security - 5/8″ x 3-1/8″ Span - Stainless Steel Hitch Loc
Reese Towpower Interlock® Trailer Hitch Ball Mount Security Kit, Fits 2 in. Receiver, 2 in. Drop, 0.75 in. Rise, 6,000 lbs. Capacity, Includes 2 in. Trailer Hitch Ball and Bent Pin Receiver