NOT suitable for modern rotary tools. The clamp is too small, so no clamping force. I would have to change it to make it work. Which I'm only going to do because it's the cheapest option available and it works as soon as I change it, but it doesn't work the way it is. above the stem clamp. That's the kind of clip they need to make, the clip that's coming on the product is complete bullshit.