All Kensington locks are built to exacting engineering standards. This lock is rated as Safe Pro, a rating awarded to Kensington Security Locks that are tested under stringent test conditions by third party testing agencies for their ability to withstand attacks. We provide two keys with each standard lock. Each key is stamped with a unique code. Register your code online and well be able to send you a replacement key. Our business is protecting yours Kensington locks are made with high-carbon steel cables and tested under rigorous real-world conditions to resist lock-picking, corrosion, tampering and extreme environments. Our locks set the industry standards, and continue to exceed them. Master keyed solutions available Master keyed solutions allow you to tailor the physical security of equipment to specific business needs. Regulate access with a set of locks that can be opened by a master key. Offer employees unique, individual keys to their own locks while you keep a mast.