Assa Abloy 2788 Mortice Deadlock Case 70mm (D) Satin Chrome manufactured from steel, offers a medium level of security and is suitable for use on external timber doors. If the key is lost or stolen, cylinder master keying for access control with easy cylinder replacement. The key is easy to remove in a locked/unlocked position with a choice of key, turn or handle arrangement. Corrosion resistant. Withstands damage caused from abrasion. The heavy sprung follower enables unsprung furniture to withstand heavy use over time.