Dale Stainless Steel 5L Mortice Dead Lock 63mm is designed for using to easily keep a door securely shut. The mortice lock is embedded within the door and the dead lock provides a bolt. The door will automatically lock so can only be opened from the outside using a key. The 5 levers provide maximum security for a door making it ideal for use on a front door. The stainless steel gives a grey finish and is corrosion resistant.