VEVOR THS001 Trailer Coupler Lock for 2 and 2-5/16-Inch Couplers: specs

The VEVOR THS001 is a trailer coupler lock. It fits over the coupler at the front of a trailer, which prevents the trailer from being hitched to a tow vehicle while the lock is in place. It is made for RVs, boat trailers and utility trailers that are parked for long periods.

What a coupler lock does

The coupler is the socket that sits over a tow ball. A coupler lock fills or covers it so a ball cannot be inserted. It acts as a deterrent: it makes a theft slower and more visible, but no lock stops a determined thief. Many owners use one together with wheel locks or chains.

Which couplers it fits

VEVOR says the lock fits bulldog couplers in two sizes, 2 inches (50.6 mm) and 2-5/16 inches (58.6 mm). The listing also says it can secure safety chains and tells buyers to check the coupler size before purchase. Couplers that aren't the bulldog type, or that are a different size, may not fit.

Construction

The lock is carbon steel with a stated wall thickness of 0.24 inch, which the brand says resists crowbars, drills and other tools. The lock body is aluminium alloy. A powder-coated finish is meant to resist corrosion, and a dust cap covers the keyhole against moisture. Together these suit outdoor storage. The lock weighs 11.9 lb and measures about 8.9 x 4.5 x 4.5 in.

Fitting and keys

VEVOR says locking takes less than 30 seconds: unlock, place the lock on the coupler, and secure it, with one-handed installation. An internal cushion pad is described as holding the lock firmly and protecting the coupler. The lock comes with three keys, so one can be kept as a spare away from the trailer.

Using it day to day

A coupler lock is only useful if it goes on every time the trailer is left, so how quickly it fits matters. Check that the lock sits snugly and that the shackle or lock mechanism closes fully. Wipe off grit before locking, and keep the keyhole clean, since dirt in a lock is a common cause of sticking. Follow the manual's advice on lubrication, and carry the lock inside the tow vehicle rather than leaving it on the trailer.

Who it suits

It suits owners of RVs, boat trailers and similar trailers that sit in driveways, storage yards or campsites, and anyone adding a visible deterrent.

What to check before you buy

• Coupler size and type: measure it and confirm it is a bulldog coupler of 2 or 2-5/16 inches.
• Clearance: make sure nothing around the coupler, such as a jack or wiring, blocks the lock.
• Keys: keep spares somewhere separate, and look after the dust cap.
• Weight: it is heavy, so check you are happy to lift it on and off.
• Insurance and local rules: some insurers state security requirements, so check yours.

The short version

• A coupler lock for 2-inch and 2-5/16-inch bulldog trailer couplers.
• Carbon steel with a 0.24-inch wall, powder-coated, with an aluminium alloy lock body.
• Three keys, a dust cap and an internal cushion pad.
• Weighs 11.9 lb; intended to go on in under 30 seconds.
• Confirm your coupler type and size first.

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