I bought these for a pair of Akg pencil mics. They fit well, but they are a tight squeeze. I guess that's what you want, but i feel a bit funny pushing mics into a tight clip......
As with any mic clip the manufacturers measuremnts are approx, and all pencil mics may have slight differences as well. Unless you can go to a shop and physically try things out, it will be a punt. Also what's tight to me may not be tight to you. As i have said in earlier reviews i look after my equipment, and can be a bit anal about slight marks, and scratched etc.....For the price point they're good value, just do your research and measurements, then cross those fingers....