The On Stage MS9750 heavy-duty Platinum Series stand is built to last! Heavily built, the zinc diecast leg housing features a solid steel machined lug with M20 threading and locking washer. This coarse threading provides an excellent combination of fast assembly and secure connection, while extending thread wear far beyond fine-thread designs. Allen nuts and bolts in the leg housing allow for tension adjustments. Its steel shafts measure 7/8" and 5/8" in diameter like most common portable stands, but its heavy-duty mid-point clutch is extraordinarily robust. The clutch is designed to act as a brake on the upper shaft, even when loosened, preventing the shaft from crashing down while adjusting height. To aid with precise mic positioning, the upper shaft features an oversized knurled locking washer that keeps any attached mic clip exactly where desired. Connection of the lower shaft to the base is via M20.