Infinite Rule Security 61121-S Trailer Latch Lock for Demco EZ Latch 2in Ball Coupler Cast Model

The Infinite Rule Security 61121-S is a purpose-built trailer latch lock designed specifically for the Demco EZ Latch 2-inch ball coupler — cast model only. This anti-theft security lock prevents unauthorized uncoupling of your trailer, giving you added peace of mind whether you're parked at a job site, campground, or storage facility.

Key Features:

• Engineered specifically for the cast Demco EZ Latch 2" ball coupler — will not fit stamped model couplers
• Stainless steel construction for strength and corrosion resistance
• Made in the USA by Infinite Rule Security
• Weatherproof design for all-season, outdoor use
• Locks Keyed Alike compatible across Infinite Rule Security product line
• Deters theft with a custom fit that resists tampering

Infinite Rule Security products are third-party tested for shear strength, ensuring reliable, real-world protection. The 61121-S installs directly into the latch mechanism of the cast Demco EZ Latch coupler, blocking the latch from being released without the key. Important: This lock is compatible with the cast Demco EZ Latch coupler only — verify your coupler model before purchasing, as it will not work with the stamped version.