Euro Security Cylinder Pull with Mini Lever is designed specifically to work with the Eurospec Euro Profile Nightlatch. . Carries a 10 year mechanical guarantee and is fire door rated. Suitable for use in all domestic, industrial and commercial environments. As long as the recommended cleaning process is followed, the stainless brass PVD long-life finish offers a 25 year finish guarantee, which renders the surface impervious to damage in normal use including oxidation and abrasion. So your product will stay as good as new, even in coastal areas.