This is a Loops Euro Single Cylinder lock with a 40mm size (30mm/10mm external and internal dimensions). It features an MP5 Architectural 5 pin cylinder for a good degree of security. The lock is certified to British/European standards (BS EN 1303) and is fire door rated. Keyed alike or master keyed options are available, and it comes with a 5-year mechanical guarantee. This lock is suitable for both domestic and commercial use. The finish is Satin Chrome.