Durable Construction: Heavy-duty extruded aluminum won't rust or corrode, ensuring long-lasting performance Simple Installation: Place on window or door track and tighten thumb screw for secure positioning Enhanced Security: Prevents window from being forced or pried open from outside, providing additional protection Versatile Compatibility: Easy removal and reusable design fits most vertical or horizontal sliding windows and many sliding doors Child Safety Protection: Prevents children from accidentally opening windows and protects against accidental falls Ventilation Control: Allows you to keep windows partially open for fresh air circulation while maintaining security with the lock engaged, Manufacturer: dingchimo