METOWARE Trailer Tongue Coupler Lock 1/4" Dia, 3-1/2" Span

METOWARE Trailer Tongue Coupler Lock is a compact, heavy-duty push-to-lock trailer pin with a 1/4" diameter and 3-1/2" span that secures your trailer hitch quickly and resists rust and tampering.

This lock is built for owners who tow often and need a dependable, weatherproof lock that’s simple to use on the road. Constructed from heavy-duty steel with an electrophoretic finish, a rotating lock head and a watertight rubber cap, the METOWARE coupler lock balances portability with robust protection. It includes a reinforced tubular lock core and two tubular keys (one spare) and is optimized for trailers, utility carts, and accessories that accept a 1/4" pin.

How does the push-to-lock design make hitching faster?

The push-to-lock mechanism lets you secure the coupler without fumbling for a key: just insert and press the pin until it engages. To remove it you only need to turn the tubular key slightly and the pin pops out for quick detachment. This streamlined action saves time during loading, unloading, or when switching trailers.

• Push-to-lock convenience—no key required to lock.
• Key-turn release—fast removal with a small twist.
• Includes two tubular keys—one for regular use, one spare.

Will this lock stand up to weather and corrosion?

Yes — METOWARE applied an electrophoretic paint coating and added a rubber waterproof cap over the lock head to block moisture and debris. These features dramatically reduce surface corrosion even when exposed to rain, road spray, or snow. The sealed design keeps the keyhole cleaner and more reliable over time.

• Electrophoretic finish for superior rust resistance.
• Watertight rubber cap protects the keyway from water and grit.
• Durable steel construction designed for long-term outdoor use.

How secure is the METOWARE tubular lock core?

The lock uses a reinforced zinc-alloy tubular core paired with heavy-duty steel components to resist common attacks and provide practical theft deterrence. While no lock is entirely impervious to determined thieves, the tubular system and solid pin make unauthorized removal more difficult than standard hitch pins. This level of security is suitable for everyday towing and unattended parking.

• Reinforced tubular lock core for increased pick resistance.
• Heavy-duty steel pin and lock head construction.
• Compact 1/4" diameter balances strength and portability.

What size and portability should I expect from this trailer pin?

The pin measures 1/4" in diameter with a 3-1/2" effective span, giving it enough length for most couplers while remaining easy to carry. Its low weight and compact profile allow it to fit in a pocket, glovebox, or tool kit without adding bulk. The included two keys and protective cap ensure it’s ready for travel or storage between uses.

• Pin size: 1/4" diameter with 3-1/2" span fits common couplers.
• Portable—pocket- or bag-sized for convenient transport.
• Comes with two tubular keys and a rotating, sealed lock head.

Who is this for? METOWARE's Trailer Tongue Coupler Lock is aimed at weekend boaters, landscapers, tradespeople, RV owners and any trailer users who need a reliable, easy-to-use locking pin that survives outdoor conditions. It’s ideal for anyone who wants faster hitching, improved corrosion resistance, and a compact lock solution that fits into daily towing routines without bulk or complexity.