The SCHOEPS SGH is a tapered stand clamp designed exclusively for the CMH Voice & Vocal Microphone. The official product page specifies it for the CMH 64 and CMH 641 variants.

Its thread is 5/8"-27 NS, with adapters for 3/8" and 1/2". The official order number is 161110. SCHOEPS records a metal housing as a 2006 model update. The stated compatibility is limited to the CMH family, so check the microphone reference before mounting the clamp.