Poor quality, once you attach a lock, it will be come off from base once one try to open the door for the first time.

Three stars for the adhesive tape because it doesn't have the ability to secure it well and it needs some reinforcement with a little logo to get the job done. Also, it doesn't fit well on aluminum doors with grooved patterns and it requires a workaround.

There is no other description than TRAGIC. Purchased on 29/04/22. I wanted it so that my cats cannot open the door. For greater safety, I decided to install both together on the same doorknob (I had high expectations though). The result is shown in the photos the very next day. Everything fell apart. I have never encountered a worse product. I tried to assemble them again, but it was not possible. I hope parents do not rely on the safety of their children on this particular product.

I bought them to put on the balcony doors. They stuck perfectly, I was thrilled. Then my two-year-old comes, looks at it, grabs it, and simply pulls one of the two ends that the handle is between, and it comes off. The adhesive remained.

The little one (2 years old) can now reach the doorknobs and I had to find a way to prevent him from entering the room while I'm working (the key is lost). The surface of the door is glass, it is stuck well and for now it is doing its job well. It opens with more force applied.