Review on 🔒 Enhance Home Safety with Defender Security U 9819 Sliding Window Security Lock - Economy Aluminum, Pack of 4 (Silver) by Victor Olsen

This is exactly what I was looking for. Mine came in a small package of 4. My window is a sash window with latches. I wanted to jazz it up, so I was looking for something that didn't require installation or tools. All you have to do is insert the clip piece between the window rails, screw in a small piece of screw until it is firmly clamped, and you're done. Mounted two on the window, one on top and one on the bottom. It's almost impossible to open a window with something like this installed. If you are really determined, you can always break glass, but this product cannot protect against that. Generally very useful. Sturdy and works as intended.