Two strong 10 mm lock head offer uncompromised security for even the thinnest notebooks and devices Patented Hidden Pin technology ensures theft protection that you know from Kensington T-Bar Locking Technology attaches to the Kensington security slot found on most notebooks Carbon steel cable resists cutting attempts and anchors to desk, table or any fixed structure Pivot and rotate ball joint provides superior notebook engagement Each lock is supplied with 2 keys Also available as a lock system for orders of 25 or more: Master-keyed system: Manufacturer's no. K65099M Single-keyed system: Manufacturer's no. K65099S Like-keyed system: Manufacturer's no. K65099L