? Available for purchase is a Pre-Owned Enforcer Air Cuff? Lock #3000 by Transport Security, Inc. (USA Made) Comes With Both Keys, Instruction Paper Original Box.? The Air Cuff is a heavy-duty anti-theft device designed to prevent unauthorized movement and tractor theft by locking over the air brake valves inside the cab, rendering the tractor immobile without the key. ? Includes both original keys, original box, and printed instruction sheet. ? Overall Condition is Very Good ? clean, fully functional, and ready to use. Light cosmetic wear consistent with normal use. (See photos for detail) OVERVIEW: This is a genuine Transport Security ?Air Cuff? Lock,? widely trusted in the commercial trucking industry to secure unattended tractors. It installs in seconds over the red and blue air brake knobs (trailer and service lines), physically blocking access and preventing the tractor from building or releasing air pressure. The #3000 model is known for its rugged build, tamper resistance, and ease of use ? a must-have for fleet managers, independent operators, and any driver parking in unsecured areas. AUTHENTICITY FEATURES: ? Genuine Transport Security product ? Made in USA ? Model: Air Cuff Lock #3000 ? Locks over tractor air brake valves ? immobilizes the cab ? Heavy-duty steel construction ? built to resist tampering ? Patent-pending design for reliable, tool-free installation ? Includes 2 original working keys ? Comes with printed instruction sheet and original white box ? Designed for commercial use, trusted by fleets and security professionals SHIPPING HANDLING: ? Ships fast and secure from the USA ? Carefully packed to ensure safe delivery ? Buy with confidence from a trusted seller ? A proven, field-tested solution for deterring tractor theft and protecting your equipment ? grab this authentic Enforcer Air Cuff Lock before it?s gone! ALL PHOTOS ARE OF THE EXACT ITEM YOU WILL RECEIVE.