Chumia Trailer Hitch Locks 4-Piece Set — Black, 1/4 in Pin & 3/4 in Span, Zinc-Alloy Coupler Locks with Two Keys Each

Chumia's 4-piece trailer hitch lock set secures trailer tongues, coupler doors and cargo boxes with four keyed padlock-style locks and two keys each.

Keep your trailer, boat, RV or utility cargo safer with a compact set of locks designed for quick installation and durable everyday use. Each lock in this Chumia set features a 1/4-inch hardened pin and a 3/4-inch adjustable span to fit common couplers, plus two matching keys so you have a spare for emergencies or shared access.

How do these locks protect my trailer from quick theft?

Each Chumia hitch lock blocks the coupler latch and pin locations so attaching the trailer is not possible without the matching key. The padlock-style body and hardened locking pin resist casual tampering and provide a visible deterrent to opportunistic thieves.

• Locks the tongue coupler and latch points to prevent hookup
• Zinc-alloy body resists bending or snapping under light attack
• Black painted finish reduces corrosion and keeps components readable
• Visible locks discourage unauthorized handling and theft

Will these fit my trailer coupler and how easy are they to use?

The Chumia set is sized for common trailer hitch tongues: a 1/4-inch locking pin with a 3/4-inch span fits many ball-coupler styles and accessory points. Their padlock form factor makes them straightforward to insert and lock by hand, with two keys supplied per lock for simple access control.

• 1/4" diameter locking pin fits standard coupler holes
• 3/4" span accommodates typical latch and bracket widths
• Two keys per lock for backup and shared use
• Small, lightweight design for easy storage and transport

How durable are these locks in outdoor and marine environments?

Chumia constructs the locks from zinc alloy with a protective painted finish to improve resistance against wear, rust and outdoor exposure. While not stainless steel, the treated zinc body offers good lifespan for routine road, marina and storage use when rinsed and dried after heavy salt exposure.

• Zinc-alloy construction for strength and wear resistance
• Painted exterior reduces corrosion and fading over time
• Compact design minimizes crevices where salt or dirt can collect
• Recommended to rinse and dry after saltwater exposure for longevity

What comes in the package and how many keys are provided?

The package contains four separate hitch locks, each supplied with two unique matching keys. You receive eight keys total, letting you keep spares, hand keys to a partner, or stow an emergency key in a separate location.

• Four individual hitch/coupler locks per set
• Two matching keys with each lock (eight keys total)
• Compact, pocketable locks that fit vehicle storage areas
• Individual locks can secure doors, cargo boxes and couplers independently

Who is this for? The Chumia 4-piece trailer hitch lock set is made for trailer owners, boaters, RV and truck users who want a simple, visible layer of theft deterrence. It’s suitable for people who need multiple locks for several trailers, extra security on cargo boxes or shared access among a work crew. If you want an affordable, portable way to reduce unauthorized towing or entry, this set provides keyed convenience, durable zinc-alloy construction and practical sizing for common coupler types.