I read other comments about this tool, so I reservations. But I ordered it anyway. The first day I tried to use it, it did nothing. I thought I could've done something wrong. So I went through the process again. I turned the Dremel on and again nothing, except this time I heard a very quiet high pitched squeal coming from my dremel. Within 2 seconds, before I could turn it off, I had smoke coming out of the dremel. Apparently, the tool was in some kind of bind which is is why the flex wouldn't turn but that bind also burned up the dremel.

So, if you get a bad flex, depending on what's wrong with it, you might end up replacing both of the tools. Bad thing is you won't know til it's too late. There are other brands of the flex type that are pretty universal. They fit many brands of Rotary tools. I haven't tried any of them yet.

I just got a replacement. of both tools(Dremel brand)...we'll see
I read other comments about this tool, so I reservations. But I ordered it anyway. The first day I tried to use it, it did nothing. I thought I could've done something wrong. So I went through the process again. I turned the Dremel on and again nothing, except this time I heard a very quiet high pitched squeal coming from my dremel. Within 2 seconds, before I could turn it off, I had smoke coming out of the dremel. Apparently, the tool was in some kind of bind which is is why the flex wouldn't turn but that bind also burned up the dremel. So, if you get a bad flex, depending on what's wrong with it, you might end up replacing both of the tools. Bad thing is you won't know til it's too late. There are other brands of the flex type that are pretty universal. They fit many brands of Rotary tools. I haven't tried any of them yet. I just got a replacement. of both tools(Dremel brand)... we'll see