A round heavy duty stainless steel padlock with 2 keys. Highly visible yellow colour. Easy manual installation. Deter thieves and protect your trailer with this effective hitch lock. It prevents thieves from towing it away by fitting in the coupling.
eBay
Anti-theft Trailer Hitch Lock Trailers Coupler Padlock Hook Connector Tongue Locks Hitch Security Protector Zinc Alloy 1/4 Inch
Aliexpress UK
This universal heavy duty hitch lock is perfect for coupling to any caravan or trailer, so you'll know that your vehicle is safe! It works with all 50mm tow balls which are standard for most of the caravans and trailers.
eBay
Heavy Duty Trailer Hitch Lock - 2-5/16 inch Adjustable Anti-Theft Coupler Lock, Universal U-Shape Ball Security for Tow Receiver
Aliexpress UK
KEEP YOUR CARAVAN OR TRAILER SAFE AND SECURE WITH THIS HITCH LOCK VERY EASY TO APPLY AND USE VERY SECURE LOCK. Visible security that obstructs the tow hitch. Guardian hitch lock High visibility deterrent.
eBay
Trailer Hitch Pin Lock 5/8" 1/2" Dual Receiver Locking Trailer RV Truck Tow Heavy Duty Anti Theft for 2" Towing Receiver Lock
Aliexpress UK
Complete with hardened steel close shackle padlock and 2 keys. Heavy Duty Universal Trailer Hitch Lock. Suitable for horseboxes, car transports, trailers and trailer tents. Strong and robust case.
eBay
CNSPEED Trailer Hitch Coupler Lock 1/4" Zinc Alloy Small Trailer Lockstitch For Locking Hauling Security Towing Tow Bar
Aliexpress UK
Works with most types of coupling. Heavy Duty Anti-Theft Device for Trailer Caravan Horseboxes. Place the trailer lock on the trailer hitch and lock into place. Slide the U-bar tightly over the trailer hitch for an easy and tight connection.
eBay
Universal Caravan Hitch Cover Waterproof Dustproof PVC Trailer Tow Ball Coupling Lock Cover Heavy-Duty Tow Hitch Cover For RV
Aliexpress UK
This trailer padlock is simple in design and very easy to install, no need for complicated tools and techniques, just plug in the ball joint and put it in the right position, finally lock it with the key.
eBay
Waterproof Caravan Hitch Cover PVC Trailer Tow Ball Coupling Lock Breathable Rain Snow Dustproof Protector Towing Hitch Cover
Aliexpress UK
KEEP YOUR CARAVAN OR TRAILER SAFE AND SECURE WITH THIS HITCH LOCK VERY EASY TO APPLY AND USE VERY SECURE LOCK. Visible security that obstructs the tow hitch. MSA security orange hitch lock High visibility deterrent.
eBay
Password type trailer lock Key type trailer lock Stainless steel house anti-theft lock Flower basket type car lock Trailer hook
Aliexpress UK
Caravans and camper trailers. Provides a strong visual and physical deterrent against trailer theft while remaining simple to use and highly effective. Boat trailers. Key Features Quick and easy installation with a secure fit.
eBay
Caravan Hitch Cover Towing Hitch 600D Oxford Cloth Easy to Use Dustproof Rain Snow Protection RV Caravan Trailer Tow Hitch Cover
Aliexpress UK