Protects idling and parked tractors from theft by completely encasing the parking brake and trailer air valves. LOCK EXTERIOR: Die cast aluminum lock making it nearly impenetrable. LOCK TECHNOLOGY: Rotating Disk Cylinder Core; Nine-cylinder disk locking mechanism makes it nearly impossible for thieves to pick your lock. DIMENSIONS: 10 × 6.75 × 2.5 in, WEIGHT: 1.819 lbs Lost keys can be replaced, if registered with manufacturer. Number listed on key tag needed. NOTE: Not compatible with Kenworth T600 (2015, 2016), Freightliner Cascadia (2016), International Pro Star (2016) The WAR-LOK Tractor Trailer Air Brake Lock is constructed of cast aluminum to protect idling and parked tractors from theft by completely and securely encasing the parking brake and trailer air valves. WAR-LOK's latest lock technology makes it nearly impossible for thieves to pick your lock. With a nine-cylinder disk locking mechanism, inner metal cylinders are meant to easily detach from the lock and spin upon the chance of a thief drill. Air Brake Locks can be keyed differently, keyed alike, or keyed alike to a master key. Master key option is only available on our website, www.war-lok.com. *May not fit International Prostar Trucks *Not compatible with Kenworth T600 (2015, 2016), Freightliner Cascadia (2016), International Pro Star (2016)