RUST-RESISTANT STAINLESS STEEL: stainless steel casting with excellent brushed nickel finish---beautiful appearance, rust-proof, brushed finish against bumps and kicks, sturdy chain lock for interior door, 100% durable. With PU leather chain, can prevent friction. can come off. SAFETY SAFE FOR CHILDREN: This door chain lock can also be installed out of the reach of children so that they can't open the door by themselves. No longer have to worry about them suddenly running out, providing extra door safety for children. SAFETY LOCKING DEVICE: The door security chain lock cannot be unlocked from the outside, easily unlocked from the inside, the chain allows a door to be opened slightly to allow viewing and ventilation securely, stop theft, provides extra security on residence and apartment doors. EASY TO INSTALL ON A VARIETY OF DOOR TYPES: The chain guard can be used with wooden or metal doors on a variety of door types, can be placed on or next to the door frame. It includes a 6-inch