the t.bone Ovid System Bass Clip

The microphone this goes with is very cheaply priced, and now you know where they make their money with this system. This clip is ridiculously expensive, but on the whole it's still a good deal. You need this clip if you want to use this mic for double bass, period.
It fits very tightly on the strings and the mic, so as long as you don't go full-on Lee Rocker it should stay in place fine.

You just need to work out the position but it will hold without any issues

Make really easy to attach TBone mic in to the double bass

Very good quality. to approve. Holds well. Very convenient for amplifying instruments

This small peace of rubbery plastic does it´s job fine.

simply it works. Just little upgrage because of unimount is to short to perfect mount on double bass.

Just tried the Ovid mike on my upright, the clip was holding the mike correctly, there were some adjustment possibilities how to direct the mike on my bass.
Simple but effective.