I broke my glasses right in the middle (between the lenses) and now I can't afford new glasses. I've tried almost every type of glue (including quick drying types) to attach them and none of them held my glasses together for more than a minute. I was about to give up when I saw this product in a video online about fixing broken glasses. I decided to give it a try and if it doesn't work my husband can use it for his plastic modelling. Let's just say this product saved me from wearing my old horribly scratched glasses that I had in my desk drawer. IT WORKED! I have been wearing the repaired glasses for 5 days now and they are holding up perfectly. I've even dropped them a few times (did I mention I'm clumsy?) and the binding is as strong as ever! I suggest watching a video on how to use this thing and if you use it correctly and for its intended purpose you won't be disappointed. Definitely worth spending $20 on these instead of $300 or more for a new pair of glasses!