Prima, because no one comes out

I've done all the windows so childproof. Like the fact that all have the same key, which saves search or replacement, just in case one is lost. As it stands with burglary security, I can not judge. With us on the 5th floor it comes to "not get out" instead of "do not enter". The handles can be quickly and easily mounted, the screws fitted well. But the cover of the screw shifts from time to time, but what I like verschmerze at the price.