[Window Locks Security]:The window security bars can be easily adjusted to the ideal width. Security bars for can withstand repeated impacts on forced entry, effectively stopping burglars from entering home through sliding or patio doors. The sliding window locks can also prevent children from falling from the open , ensuring the safety of children/family. [Easy to Install]:The burglar bars for inside is suitable for vertical , sliding and patio doors, you can put it directly on the window or door track of sliding and patio doors without any tools, if it is a vertical window, you need to fix it with tape on the vertical window track, easy to install. [Hight Quality]:The security bars for inside are made of high-quality steel, which is stronger and more than other similar products, strong and smooth, and has the characteristics of anti-rust, , non-deformation, and non-fading. [Length Adjustable]:The window locks security bar offers 12 adjustable lengths to control the window, just push the pin to lock the height in place, fits most standard window tracks. [Kind tips]:Please measured your window or door track before purchasing! The window stoppers for sliding is 1 inch wide so that make sure your window or door track must be at least 1 inch wide., Manufacturer: Littimoon