Size: 5 inch body length, 7-1/4 inch chain length, Thick material: 1/16 inch thickness. Material: Made of SUS-304 stainless steel and brushed finish, our Hasp Lock works perfectly, alloy, anti-corrosion, durable. Will not rust. Easy to install: It is delicate and easy to install. The delivery includes distribution screws for installation and maintenance. Just screw in the screw, which is very convenient. Security Guard: Door Chain Lock Helps identify a caller before the door is fully opened, Stops forced entry, Provides reliable protection. Feature: All metal construction, press the spring-loaded button to unlock. Improve your home security made of solid stainless steel, will not rust, strong and durable Pay attention: Please allow 1-3cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Chain Guard Note: 1. Please allow 0.5-1cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.