RETRUE 1/4" Trailer Coupler Tongue Lock – 3.5" Span Heavy Duty Trailer Hitch Latch Lock with Tubular Key, Anti Theft Lock for RV Boat Utility Trailer

The RETRUE 1/4" Trailer Coupler Tongue Lock with 3.5-inch span is engineered to deliver dependable trailer security for modern latch-type couplers that require longer locking pins. Many standard coupler locks are too short to properly secure wider trailer latch mechanisms, leaving your trailer vulnerable to theft.

This extended-span lock solves that problem with a 3-1/2 inch effective span and 1/4 inch diameter locking pin, making it ideal for RV trailers, boat trailers, jet ski trailers, and heavy-duty utility trailers with wide coupler latches.

Security begins with strong construction. The lock body is forged from industrial-grade zinc alloy, designed to resist aggressive prying and tampering attempts. The steel locking pin is zinc plated to prevent rust and corrosion, allowing the lock to perform reliably even in demanding outdoor environments.

To further enhance security, this coupler lock features an advanced tubular key locking mechanism, which provides improved resistance against lock picking compared to traditional flat key systems. Two precision tubular keys are included, allowing fast and convenient locking or unlocking with a simple 1/4-turn rotation.

Durability in all weather conditions is also a priority. The lock body is protected with a premium black electrophoretic paint finish, while a rubber dust cap protects the key cylinder from water, dirt, and debris. This dual-layer defense ensures long-lasting operation across seasons and environments.

The padlock-style coupler design also acts as a visible deterrent, discouraging potential thieves from targeting your trailer.

From road trips to job sites, the RETRUE trailer coupler tongue lock provides reliable security and peace of mind wherever your trailer is parked.