DELUX DEAD LOCK A premium deadlock is different from a regular deadlock, as it has a higher quality, performance, and design. Some premium deadlocks also have features such as anti-drill, anti-saw, anti-bump, and anti-snap protection. Specification : 2 turn features big brass dead bolt to ensure safety, 3mm Thick Forend Plate, 1.5mm Striking Plate, Can be fitted in door which is thick more than 30mm, Closed body construction, Can be fitted in door which is thick more than 30mm.