With Expertise Built In , the OTR Trailer Gladhand Lock is the perfect solution for preventing unwanted trailer connections and ensuring the safety and security of your truck and trailer. This lock is designed to fit most makes of gladhands and provide a secure and reliable grip for coupling and uncoupling your air brake system. With their ergonomic design and lightweight construction this gladhand lock is easy to use and can help reduce the risk of accidents or equipment damage when handling your trailer. The lock feature on the emergency side glad hand is an added safety measure that helps prevent unauthorized access to your trailer's air brake system. Each pair of handles comes with two keys for added convenience. Gain an added peace of mind when leaving your trailer unattended. FleetPride is your First Click in Heavy Duty .