[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. [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. [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. [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. [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. Colour:White Material:Metal Size:16.3in Package Contents: 2 x Window Security Bars Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.