Door safety locks, Extra thick Door Chain Lock,Casting Door Security Chain Guard, Heavy Duty Latch Lock for Inside Door, Brushed Nickel Finish Features: Great to protect your exterior doors from theft, wind, rain, etc. Suitable for wood and metal door in the home, office or other places. Latches & Bolts are Constructed from high quality Stainless Steel,Ensuring quality and longevity. The high quality stainless steel hand polished brushed finish to ensure it will not rust and long service life. spring button lock can enhance the anti-theft performance and to Offers Reliable Protection Against Intruders .specification: Material: High quality Stainless steel Thickness: 1.3MM thick Finish : Brushed Steel Type: Door Bolt Lock Color: Silver Installation: screw mountingPackage include: 1 * door bolt 6 * mounting screws