General description This anti-theft chain door lock is made of stainless steel, ensuring strength and durability. It features a wear-resistant PU leather cover that wraps the chain to prevent damage to the door panel. This lock is simple to use; just press the button behind the door to remove the chain, and it cannot be unlocked from the outside. It is ideal for families, hotels, apartments, and more, enhancing security and preventing theft while also keeping children and pets safe from leaving the house without permission. Technical specifications Material: Stainless steel with PU leather cover Includes screws for easy installation