Lock can be installed and removed in seconds.
Glad hand lock is the perfect device to dead-line a trailer, offering a simple way to prevent a trailer from being moved while being loaded or unloaded. Plastic Glad Hand Lock, Keyed Alike Lock must be removed before the air line can be connected, thereby releasing the trailer emergency brake. The trailer is immobilized because the glad hand lock must be removed before the air line can be connected, thereby releasing the trailer emergency brake. This semi-trailer lockout device acts as a harness around the air intake valve of the emergency brake system.