Features: Security Rod for window can bear repeated impacts on forced entry, effectively stopping burglars from entering home through sliding window or patios door. The sliding window lock can also prevent children from falling from the open window, ensuring safety of children/family. Make of Metal Materials, which is Enduring, strong and smooth, and have the characteristics of antirust, antioxidation, nondeformation, and nonfading. Suitable for vertical window, sliding window and patios door, you can put it directly on window or door track of sliding window and patios door without any tool, if it is a vertical window, you need to fixing it with tape on the vertical window track, easy to install. Attention: Please measured your window or door track before purchasing! Window stoppers for sliding window is 1in wide so that make sure your window or door track must be at least 1in wide. Specifications: Materials: Metal Styles: 9 hole/13 hole 9 hole adjustable length: 25-42.50cm/9.84-16.73inch 13 hole adjustable length: 41.5-74.50cm/16.34x29.33inch Package Includes: 1pc Adjustable Window Security Rod note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.