Yale Deadlocking Standard Nightlatch Security Lock Brasslux 60mm Option:Brasslux 60mm Floor standing Automatic overheat safety Floor standing Automatic overheat safety cut off which meet the exacting demands of the insurance companies and the police 1000 key variations High security levels are delivered by a 20mm bolt throw on every lock All locks have hardened steel plates to resist drilling False notching in levers resist lock picking Interior & Exterior Material: Steel & Zinc Alloy Fixings included 10 year guarantee and warranty Inside handle can be deadlocked by a reverse turn of the key in the cylinder Snib function enables the latch to be held back or deadlocked internally Keyblank number: B 1109 KEY