This 1 Star Euro Cylinder lock with Thumb Turn is approved to British Standard TS007:2014 and Police Secure by Design. It's a replacement euro cylinder with Anti-pick, Anti-Screw, Anti-Pull, Anti-Bump, and Anti-Drill components, designed to resist most criminal attack methods. The lock is supplied with 3 standard Yale keys, with additional replacement keys available from a locksmith. It's an easy way to upgrade your property's security, and the cylinder can be replaced in minutes. The thumbturn is located on the inside for convenient locking without a key, making it recommended for flats or apartments with a single fire escape door. It is suitable for a wide range of doors including wooden, composite, UPVC, or aluminium doors with a Euro profile.