To orgainze your key managment KESO developped the colour keys. The KESO Colour keys have a coloured to identoify the correct keys. In total you can have up to 13 different colours.
A hard chrome plating version is availabel as well.
Attention: This article is a KESO key for KESO locks with series locking. The price is just valid when you order the lock as well. It is no duplicated key!