Protect your trailer with InfiniteRule’s trailer latch locks, designed specifically for the DEMCO EZ Latch 2" Cast Coupler (Model 61121).
Unlike generic locks that fit all couplers, InfiniteRule locks are custom-machined for specific models—providing a tighter, more secure fit and superior deterrence against theft.
Constructed from solid stainless steel using precision CNC machining, this lock delivers the strength and durability needed for RV, boat, equipment, or utility trailer security.
While no lock can prevent every theft attempt, InfiniteRule locks are independently tested and proven to offer a higher level of protection compared to cheaper, universal alternatives.
Criminals are more likely to move on when faced with the added time and difficulty of bypassing an InfiniteRule lock.
A tight-sealing O-ring and weatherproof rubber cap protect the keyway from dirt, water, and grime—ensuring reliable performance in all conditions.
Trusted by contractors, outdoor enthusiasts, and professional haulers nationwide, InfiniteRule delivers heavy-duty security with long-lasting reliability.
InfiniteRule is also a recognized leader in keyed-alike lock systems, simplifying trailer security by reducing the number of keys needed to carry.
While this specific listing is for an individual lock, it represents the same engineering expertise and reputation for convenience that InfiniteRule is known for.
All InfiniteRule locks are proudly Made in the USA, with design, machining, assembly, and service handled domestically under strict quality control standards.
Before purchasing, confirm your coupler model.
This lock is engineered specifically for the DEMCO EZ Latch 2" Cast Coupler and will not fit stamped models or other brands.
Choose InfiniteRule Security for application-specific trailer locks, a proven deterrent advantage, and the durability of true American-made quality.
