Door Lock Chain Anti-theft Chain Door Lock, Slide Lock Door Security Chain, Spout Lock, Thick Stainless Steel Heavy Duty Slide Lock [2 in 1 Anti-theft Chain Door Lock] One lock = one slide lock + one chain lock. The door chain lock is equipped with a spring button lock that can improve anti-theft performance and ensure safe viewing and ventilation when the door is partially open, providing extra security for your home and office doors. Extra security and privacy for your bedrooms, bathrooms, toilets, as double protection against unwanted entry. The bolt chain lock can also be installed in windows, cabinets, backyards, kennels, fences, porches, closet doors, outdoor sheds, laundry rooms, chicken houses . It can also improve child safety at home, prevent your children or children from opening drawers or cabinet doors. [Stable and durable] Only the highest quality source components. Our chain door guard with lock is made of high quality stainless steel for rust resistance, uses the latest electroplating and polishing technology to increase longevity. Slider with brushed nickel surface improves corrosion resistance, improves wear resistance and hardness. [Quick Installation]Offer 6 screws needed for installation for free. You only need to use a screwdriver or drill to complete the DIY installation in 5 minutes. The chain door guard with lock supports 360 degree installation. Different installation directions are suitable for different places. [What you get] Our 100% worry-free lifetime warranty and reliable 12-hour response service If you have any questions, please feel free to contact us (via order or email) , we give you the best solution according to your wishes .