Good for first time user
I have used these a couple of times now. They work great but I am unsure if the filing part is engraved glass or sprayed on. They are quite thick, and I have not dropped on yet to see how durable they are. I know most brands will break once dropped so be careful just in case. It's also hard for me to tell which side with the fine grit and which is the rougher side. I'm not sure if these even come with that option. But I know for sure that these do work, but unable to tell you for how long.
Rating: 5 stars