*eSynic Baby Safety Window Restrictor Lock*--------： The eSynic 10PCS Window Restrictor Locks 100% Brand New and Made of High Quality Aluminum Material,Able to Withstand Greater Pressure, Provide Extra Security, Health and Safety at Home and Baby/ Child Safety. * Easy to Locked and Unlocked *------:The eSynic Window Restrictor Locks for upvc With Special Limitation Design 19cm Safety Cable Provides a 11 to 16cm Restriction and Make Fresh Air in, and Window Can be Opened Fully after the Cable being Removed for one end by Using the Key. *Easy to Install*------:This eSynic Baby Safety Window Locks Items Come with Self Drilling Screws and Keys and Just a Screwdriver or Drill to Install. *Fitted to all Materials' Windows*------: This eSynic Professional Window Locks Designs Fitted Most Types of Windows and Small Doors, Including Many Kind of Materials Such As UPVC, Wood, Aluminum and Metal. *Wide Application*-----:This eSynic Window Restrictor Locks Perfect to Use in Homes, Residential Accommodation, Hospitals, Schools, Universities and Offices, Give Your Children a Safe Environment.