This is The Enforcer Air Cuff Lock, an anti-theft security device for tractor trailer. It's designed to lock into place, red and yellow button on the dash. For the park break and trailer brakes. preventing theft. Made in Thailand, this unit comes with keys for operation.

The lock is in good, used condition. It shows some minor wear and tear consistent with normal use, but it is fully functional and ready to provide security. Please refer to the photos for a detailed look at its condition and features.