The UCS-89A, formally TL89A, Series is a part of PACLOCK’s Transportation Line of padlocks. One of the big reasons PACLOCK’s “TL” line stands out is the fact that only PACLOCK can create and manufacture lines of padlocks that have the ability to cross key throughout. The TL89A is specifically designed and manufactured for the Utility 3000R refrigerated trailer door. The design of the TL series prevents any type of bolt cutter attack. The body is made from solid, 6061 aluminum billet and then precision machined in PACLOCK’s manufacturing facility. Machining the body versus casting the body is critical because casted bodies can be easily defeated by melting the bodies with an off-the-shelf plumber’s torch. A body that was CNC machined from solid aluminum can hold up to the torch test. Don’t buy die-cast padlocks ever! As with all PACLOCK’s solid body padlocks, the 6-pin cylinder is best in class for pick, bump, rapping, or any other type of surreptitious entry attacks. These locks are guaranteed to have 6-pins and include special “security pins” that thwart would be attacker’s attempts to get into your lock. These security pins are difficult to manufacture which means they cost more and is why your typical retail padlock does not include them. A variety of keying options are available. The TL89A lock takes security one step further, as it gives you the ability to hook on an additional seal between the lock and your trailer. The lock cannot be opened without breaking the seal, and this way you’ll know if someone has hacked, or tried to hack, into your trailer. Please be aware that the TL89A will not work on any intermodal container doors nor any swinging handle hasp that has an extra “rib” on the handle itself. For these situations, please purchase the “TL82A” product. Made in USA with global components.