Yale KM3030-NP Euro Double 1 Star Kitemarked Cylinder, 3 Keys Supplied, High Security, Boxed, Suitable for All Door Types, Nickel Finish, 30:10:30 (70 Mm)

British Standard for High security
The Yale KM 1 Star Euro Profile Cylinder lock with Thumb Turn has been approved to TS007:2014 1 Star rating, a high certification. It is endorsed by the Police's Secure by design scheme and provides an easy way to change the keys on a property by simply replacing the Euro lock cylinder.
Euro profile cylinder locks are a convenient way to be able to change your keys without having to replace the entire lock and that can be fitted in minutes without the need for any special tools or equipment. It is the quickest and easiest way to upgrade the security rating of your property and a convenient way to change the locks if you have moved in new house, lost your keys or suspect someone else has access to a copy of your key.
Quality Lock Specification
KM 1 Star Cylinder Lock is manufactured to a High Level specification and combats most attack methods with unique anti-Pick, anti-Bump and anti-Drill components. Burglars will recognise the 1 Star rating and often target properties with less robust fittings which can often be defeated in only a few seconds.
Yale Quality Keys
Includes a set of 3 Standard Yale keys and additional replacement keys can be ordered from a locksmith or hardware store.
Additional Specification
The convenient Thumbturn versions for the inside of the property provide a quick way to lock and unlock, without needing to use the key. These are recommended for flats or apartments that only have one fire escape door and solid doors without large glass panels.
The Yale KM 1 Star Euro cylinder series are available in a range of sizes and colour finishes. The cylinders are suitable replacements for any front or back door with a euro profile door lock including wooden, composite, UPVC, aluminium and patio doors.
Use the suggested sizing guide to check you are ordering the correct size. Measure from the middle of the current lock to find out the required sizes: Example: Internal Length (A) 40 mm / External Length (B) 50 mm, the internal size is always stated first in the product description.