The Samson Audio DMC 100 Mic Clips usually come in a set of three.  These clips are designed to clip onto drums for easy placing of microphones for live shows and in the studio.  I've only used the clips inside of the recording studio, but would think that they would have the same function no matter where you decided to use them.  I have used the clips for applications beyond drums, but they do work best to clip right onto drums.  They clip on easily and tightly and do have a good amount of flexibility in terms of the length of the clip.

OVERALL OPINION

I bought the Samson Audio DMC 100 Mic Clips in a set of three for only $25 USD, so I can't complain too much about these clips as they have served me well.  I was hoping to get a cheap alternative to some of the other clipping accessories out there, and they did just that.  While I do wish they were a bit more versatile in terms of how you could clip them, they really are supposed to be used with drums, so that is how I would recommend using them.  I have used them to clip onto other mic stands and other things to try to make them a bit more versatile, and while I have been able to do so to a degree, if you're looking for something more versatile I'd just suggest getting something elsewhere as these really aren't designed for that.  As far as clipping onto drums though, these do the trick extremely well as I've always found that they snap on and come off easily and hold the mics in place very well.  If you're looking for a set of cheap mic clips for drums, the Samson Audio DMC 100s are a good way to go for sure, as they are some of the cheapest out there that I could find without sacrificing too much quality.  These are perfect for a quick placement of any mic that will fit the clip on just about any drum...