This is a good strong rim clip for the akg drum mics. Although it isn't shown in the picture, it DOES come with the 3/8 screw that fixes into the bottom of the mic.
I emailed thomann before I purchased 2 of these and they said that it didn't include the screw, but upon delivery I found it did so I now have 2 spare, which I'm sure will come in to use at some point!