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

METOWARE Trailer Tongue Coupler Lock is a compact, heavy‑duty steel coupler pin with a 1/4" diameter and 3‑1/2" span that secures your trailer hitch with a push‑to‑lock tubular key system and waterproof cap.

This trailer coupler lock combines sturdy materials and user‑friendly design to protect your trailer during storage and transport. Built from heavy‑duty steel with a reinforced zinc‑alloy tubular lock core, it fits standard coupler latch holes and resists rust with electrophoretic coating and a watertight rubber cap. The push‑to‑lock function lets you secure the pin quickly without a key and open it simply by turning the tubular key slightly to release the pin.

How does this lock fit common trailer couplers?

The METOWARE lock is sized with a 1/4" diameter pin and a 3‑1/2" effective span to work with most standard coupler latch holes and hitch designs. Its compact dimensions make it easy to carry while still providing a secure physical barrier against accidental uncoupling and casual theft attempts.

• Pin diameter: 1/4" (6.35 mm) — fits common latch holes
• Effective span: 3‑1/2" — long enough for typical coupler thicknesses
• Compact and pocketable for convenient transport

What features improve durability and weather resistance?

Corrosion resistance and sealing are built into the design so the lock withstands wet and snowy conditions. The steel body receives electrophoretic paint for long‑term rust protection, and a rubber cap covers the keyway to keep water and dirt out, preserving function and lifespan.

• Electrophoretic paint finish for rust prevention
• Watertight rubber cap keeps moisture and debris from the keyhole
• Heavy‑duty steel construction for strength on long hauls

How secure is the tubular locking mechanism?

The lock uses a reinforced zinc‑alloy tubular core paired with stronger tubular keys to resist tampering better than basic pin locks. Two tubular keys are included — one for regular use and one spare — and the lock’s push‑to‑lock action reduces reliance on the key for everyday locking while maintaining robust keyed security when opening.

• Reinforced zinc‑alloy tubular lock core for improved pick resistance
• Two tubular keys included: one active, one backup
• Push‑to‑lock lets you secure the pin quickly without inserting a key

How easy is it to use during regular towing or storage?

The METOWARE tongue coupler lock is designed for straightforward, repeatable operation. Push the pin into place to lock instantly; to remove, insert the tubular key and turn it slightly — the pin pops out for quick release. Its size and design make it a practical everyday accessory for trailer owners.

• Push‑to‑lock operation for fast one‑handed use
• Key removal requires only a slight turn to eject the pin
• Small, lightweight design fits pockets or glove compartments

Who is this for: METOWARE’s Trailer Tongue Coupler Lock is ideal for boat owners, small cargo and utility trailer users, landscapers, RV owners, and anyone who needs a compact, reliable coupler pin for routine towing or long‑term storage. If you want a weather‑resistant, easy‑to‑use physical deterrent that fits most standard couplers and doesn’t take up space, this lock is a practical choice.

Package contents include one 1/4" diameter by 3‑1/2" span lock pin, one rotating lock head with a waterproof rubber cap, and two tubular keys (one spare). The hardware aims to balance portability, corrosion protection, and usable keyed security for everyday towing needs.