The Cylinder Double Side key mechanism (Black) is specifically crafted for installation in mortise cylinder locks, offering secure locking on both sides of the door. Suitable for all types of doors, this mechanism ensures enhanced security and reliable performance. Its dual-sided design allows for key operation from both sides, making it an ideal choice for residential, commercial, or any space requiring versatile and robust locking solutions. The mechanism is built for durability and ease of installation, fitting seamlessly into the mortise lock housing, and providing dependable security across various door materials and styles.