Yale Deadlocking Standard Nightlatch Security Lock Brasslux 60mm Option:Brasslux 60mm which meet the exacting demands 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 Floor standing Automatic overheat safety cut off 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