The MicroSaver Master Keyed Lock - On Demand is the most popular option for corporate users. Master keyed solutions give you more control over equipment while safeguarding employees from notebook and data theft. Master keyed options also protect against down-time caused by lost keys. You get - Unique locks and keys on each individual product in an order. Plus, one master key that can open all the locks in the order. Made of reinforced steel and Kevlar brand fiber this cable is 40% stronger and forms the first line of defense against notebook and data theft. Low profile design doesn"t block other ports or lift standard laptops off the desk. Ships with two user keys per lock. This product does not ship with Master Keys. Kensington will directly provide Master Keys for the locks purchased on Amazon.com. After purchasing these locks, please register at kensington to receive your Master Keys at no additional charge.