Window Restrictor Can Be Locked and Unlocked As Needed, So It Is Convenient to Prevent Children From Climbing Or Falling. After the Window Is Locked in Place, the Distance of the Window That Can Be Opened Is Limited. After the Cable Is Pulled Out From One End with the Key, the Window Can Be Fully Opened The Window Door Flow Restrictor Is Made of High-Quality Materials, Which Can Withstand Greater Pressure and Is Not Easily Damaged. Suitable for Most Windows and Small Doors Made of UPVC, Wood, Aluminum and Metal Window Locks Can Protect Sliding Windows That Open on the Horizontal Axis in the Room. Very Easy to Install and Works Well. After Installation, Damage to the Windows Caused By Strong Wind Can Be Avoided. These Window Restrictors Are Clever Solutions The High-Quality Window Limiter Can Provide Additional Safety, It Limits the Distance That the Window Can Be Opened, and Is Used for Any Doors and Windows in Homes, Houses, Hospitals, Schools, Universities and Offices, Providing A Safe Environment for Your Family and Children Window Restrictor Set Includes 8 Safety Stoppers, Each Stopper Comes With 8 Keys and 32 Self-Drilling Screws, Manufacturer: Trintion