The mortice rack bolts is simple to install and use. And a standard star key (included) smoothly operates the Bolts, allowing for easy opening and closing. These mortice bolts is for door, corridors door. They not only offer security but also complement modern interior and exterior fittings. Make from coppers, these mortice door bolts is resistant to rusts and corrosions, ensuring long terms durability. These mortice door bolts provide additional concealed locking point, effectively enhancing the security of your door and window. Installed near the top and bottom of door. Whether for residential or commercial use, they provide additional security by offering a locking mechanism that blends seamlessly with the door’s designs., Manufacturer: DIEKE