Not Your Average Door Lock.

The last lock you'll ever need.
100x stronger than a deadbolt.
Just as easy to use—and way harder to break through.
Loved by our 15,000+ Customers
Testimonials
The Door Bull
Our design makes forced entry impossible in inward opening doors.
Installs in seconds and comes with a hanger for easy access. Built tough with durable aluminum.






Developed Alongside Police Officers for Proven Protection

It's All Included
Reinforces your door using the strength of the frame to resist forced entry.
Comes with 6 heavy-duty screws to fortify your door hinges.
Made from tough, durable aluminum.
Drill bit and all parts included for easy setup.
