Gunmetal Grey Roller Lock Kit 63mm | Mucheln SeriesThe Mucheln Roller Lock Series provides a modern alternative to traditional Entrance Handles. The roller lock function is activated by a push or pull from either side of the door and requires no lever for operation. The door can close without locking with is ideal for going outside without being locked out. The roller strength is adjustable and has a secure lock cylinder for when you wish to lock the door. The Gunmetal Grey Mucheln Roller Lock Kit is