AtlasIED QR-2 Quick Release Microphone Stand AdapterThe two piece design uses a unique ball bearing interconnect designed to save set up and tear down time in touring applications. For installation the QR 2 assembly is threaded between the 7 8" tube and base of the mic stand (MS10C, MS10CE, MS12C, MS12CE). After the show, the technician simply steps on the low profile outer release ring of the QR 2 allowing the entire upper tube assembly to be separated from the base saving the time consuming operation