The Kensington K64670EU portable combination lock is designed to protect your laptop and offers superior strength, patented T-bar lock head for secure, tight fit with Kensington security slot to resist tampering Push button design for one hand operation to easily install lock Keyless 4-wheel combination, simple to set, with easy view window, comfort grip dials and convenient built in reset key Choose from 10,000 possible combinations Online registration makes it easy to store and retrieve forgotten combination codes Anchors to desk, table or any fixed structure Attaches to laptop via the Kensington Security Slot found in 99% of computers Dimensions (WxDxH): 190x80x20mm Self-coiling cable 5.5mm thick, stretches to 1.800mm (6 foot) to anchor to a desk or fixed structure yet shrinks down to just 76mm for easy packing Weight: 0.134kg Manufacturer Reference: K64670EU