Let me start by saying these locks DO work... when they want to. Installation was a headache – my drill and I became best friends that day. The zinc alloy feels sturdy, and the white caps do hide the drill holes nicely, but be prepared for some trial and error.

On the plus side, the universal keys are a lifesaver (no fumbling with 8 different ones!). Once installed correctly, they absolutely stop intruders from lifting sliding panels – I yanked and shook my test window like a madman, and that panel didn’t budge. Great for childproofing too; my niece’s tiny fingers stood no chance.

Now, the rage-inducing part: one lock seized shut randomly. Imagine an emergency and being locked IN by your own security! Also, the “shake to unlock” issue some reviewers mentioned? I replicated it on one faulty unit – terrifying if you rely solely on these. My verdict? Buy for basic deterrence, but test each lock vigorously and keep spare keys everywhere. At this price, they’re decent… just don’t bet your life on them.