Bulldog AI20 Airline Lock for Standard Coupling

• Secures Commercial Trailers by preventing the release of the brakes, stopping unwanted movement of trailers when loading/unloading
• Fits all types of trailers with palm coupling 48mm dia and 25mm deep at airway
• Easy and simple to use
• Fitted and used by existing logistics companies
• Helps prevent the theft of the trailer and its load
• Easily stored