It's very dangerous when kids open window wide beyond parents' horizon. This is a kind of security lock for children. How it is necessary to install such a security lock in the window groove!
It could be used for sliding windows or doors, iron material ensures it's long period of validity. It could also keep children from opening doors to grub home placing things.
1. Instantly lock sliding windows and doors - no drilling or tools needed 2. Place on window or door track & tighten thumb screw; lock shut or allow partial opening 3. Prevents window from being forced or pried open from outside; easy removal and reusable
4. Fits most vertical or horizontal sliding windows & many sliding doors to 2.5-4cm (Approx 1"-1.57") track-rim width(Adjustable) 5. Also can prevent children from playing with sliding door and window
Specifications: Size: About 6 x 4 x 2.4cm Color: Gray Material: Iron+zinc alloy, rubber Weight: About 50g