The Sabra-Som NIPLEX-PRO Thread Adapters 3/8" Female to 5/8" Male come in a pack of 10. The NIPLEX-PRO are Long-Neck thread adapters 3/8” female to 5/8” male (Universal microphone thread) with an extended body. These adapters make it possible to connect the BETA52 microphone, where the XLR plug is extremely close to the boom connection. They can be used on the ST2 towers instead of the simple thread adapters.