Many small-diameter microphones are 3/4" diameter including the EV RE10/15/16/18 series, the EV 635A, the AKG D112, the Neumann KM184, and hundreds more. The older EV mics came with a model 310 stand adapter, which was discontinued in favor of the model 311 that allows snapping the mic into place. While I always prefer to have the original adapter that was shipped with a mic, sometimes they are lost or broken and are not available.
The EV 311 is about $14US from Full Compass. The Audix DCLIP is about $10US shipped from Sweetwater Sound. Just for fun, I ordered an Audix DCLIP to see first hand how robust this clip is. It's a good one. The swivel locking mechanism works very well in that the thumb screw tights a surface with gripping teeth against a fiber washer to prevent slipping. It's easy and quick to position the mic.
It will be interesting to see how well the clip holds up. Fiber washers don't last forever, although a suitable replacement part may be available at a hardware store. Even then, while the clip is only $10, if you buy a lot of them, it can get expensive replacing them for the sake of a washer.
Sweetwater didn't have the EV 311 on their website, so I was not able to order one to compare. Full Compass carries them, but they are not eligible for free shipping, making it more practical to add them to an order down the road.
The 3/4" mic is also a 19mm mic. Many mic clips are specified for 19-23mm mics. Just for grins, I ordered an Audio-Technica AT8405a stand adapter for a 21mm mic. A difference of 2mm really matters. This AT clip does not fit a single mic I own.