Clamps onto the DEC rotator body of the iEXOS-100 mount.
A ¼" tripod screw should be threaded through the 6mm hole to attach the miniPC mount (printed separately) or a polar alignment device.
The inner projection of the clamp fits in the polar sight opening of the mount to lock the clamp into place and prevent it from sliding. The 9mm opening can accept a 5/8" to 1/4" adapter which allows threading the screw from the outside if needed.
The author marked this model as their own original creation.