1.Package Includes: 2 x Window Braces, 2 x Mounting Hooks and 8 x Screws. The quantity is sufficient to meet your daily needs.2.ADJUSTABLE OPENING WIDTH: Our inward-facing window locks can be adjusted to 5 different opening widths, so you can set the width you want. Very practical for daily use.3.MATERIAL: These window restrictors are made of stainless steel, with good performance and strength, more secure and strong, not easy to break or rust, can withstand more pressure, long service life.4. Easy Installation: Our window restrictors can be directly inserted into the original door handle, and can be directly fixed without additional mounting screws.5.Application:Our window locks are suitable for all types of sliding and casement windows, which can help to fix the windows.