Security Door Chain, Anti-Theft Door Lock, Stainless Steel Door Chain Lock, Sliding Door Restrictor with 4 Screws for Wooden Doors and Windows

【Steel material and wire drawing treatment】: The anti-theft chain door lock is made of stainless steel, which is sturdy and durable, not easy to fade and corrosion resistant. It can ensure your safety and have a long service life. The three-layer wire drawing treatment on the surface resists daily scratches and prevents collisions and kicks.

【Safety lock】: There is a button with a spring-loaded anti-theft button. The chain can be opened by pushing the buckle, effectively preventing outside people from reaching the inner hook and falling off the chain. This design will drop your chain and protect the house more closely, making your house safer.

【Thick chain design】: The 3mm thicker chain is durable, not easy to break, and is not easy to break when pulled hard. It can be used for a long time. 【Easy to Install】: The set includes a door chain lock and four screws that you can attach to the back of the door.The chains can be used on wooden or metal doors of all types and can be placed above or beside the door frame.(The greater the distance between the loop's position and the base, the smaller the opening angle)【Theft Protection】: The security door chain provides additional protection based on door locks and bolts, effectively preventing intrusion by thieves and strangers, making it ideal for people living alone.It can also prevent unauthorized children from leaving the house, providing extra protection for child safety.