The Ball Lock is an anti-theft locking device that expands & locks inside the coupling of your trailer preventing the trailer from being connected to a Towball. Fig.1 : Insert the ball into the coupling claw.
eBay
Car Door Lock Protective Cover 4PCS Car Door Lock Anti Rust Sleeve For Hyundai Tucson IX35 I30 I20 Kona Coupe Veloster I40 Getz
Aliexpress UK
Model: TYTCS90. The hitch lock also can be used for tray tow rope of trailer, truck, car, bike and boat. With the push to lock design, you can easily push to lock without using key. Just turn the key a little bit and the locking hitch pin will pop out by itself.
eBay
1pcs/lot High Quality Steel Lock Wire Safe Rope Lock 70/80/100 Stage Light Safety Rope Cable/Safe Wire For Stage Light Security
Aliexpress UK
This trailer coupling head can be widely used in most light weight and unbraked trailers, the maximum connecting ability up to 800kg. Trailer coupling quickly and securely to 50mm tow balls, suitable for most lightweight, unbraked trailers.
eBay
Universal Car Door Lock Protective Cover - Silicone Shock - Absorbing CushionCar Lock Sleeve BuckleDurable and Wear - Resistant
Aliexpress UK
The universal coupling hitch lock is a perfect solution to keeping your trailer and its belongings protected and secure. With recessed lock guard for added security. Supplied with 2 keys. Not suitable for caravan hitches (such as Alco, Winterhof), heavy duty horseboxes & car transporters.
eBay
12V Car Door Lock Keyless Entry System Kit Remote Trunk Release Universal Car Remote Central Lock 2 Button Remote Control
Aliexpress UK
1 PCS Trailer Coupling Hitch Lock. Strong anti-theft coupling lock. Fits most trailer and caravan couplings. Includes 2 matching keys.
eBay
Steering Wheel Lock Anti-Theft Car Security Device Heavy Duty Seat Belt Lock
Aliexpress UK
【Easy installation without tools】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
Car Steering Wheel Lock with Seatbelt Buckle Sturdy Braided Steel Rope Anti-Theft Safety Lock Set Suitable for Truck Suv Van Rv
Aliexpress UK
Works with most types of coupling. 1 x Trailer Hook Lock. Guards against theft of caravans & trailers. Color : Black. Detail Image.
eBay
Ladder Roof Rack Clamps with Padlock Ladder Locks Safe Roof Hook for Ladder Mounting Accessories Heavy Duty Lockable for Car
Aliexpress UK
A round heavy duty stainless steel padlock with 2 keys. Highly visible yellow colour. Easy manual installation. 1 x Padlock. Anti-Theft Security Tow Ball Universal Trailer Coupling Hitch Lock Security Lock.
eBay
Car Door Lock Protective Cover 4PCS Car Door Lock Anti Rust Sleeve For Chery Omoda C5 Crossover Omoda 5 FX 2022-2023 Accessories
Aliexpress UK