This is PART of the Mounting gear set for VOMO models 2021 and later versions. Duraluminum threaded coupling for Microphone Stand extension and VOMO mount adapter. US standard thread 5/8″ – 27 (U.S.) Length 2 inches. You can purchase the Complete Set via this link – MOUNTING Gear Kit for VOMO 2021  Portable Vocal Booth Mounting Gear set for setting up VOMO on a microphone stand or a Portable Tripod. Designed to work with any stand or tripod that has a 5/8 -27 threaded vertical pole.