Performance Plus OEM (original equipment manufactured) replacement microphone holder used for 90% of microphones used in the USA. The mic holder clip is break-resistant, swivel adapter features a tapered cradle for most Shure mic models including 849, SM48, SM57, SM58, SM87A, SM94, Beta 57A, Beta 87, 515X, 545, 565, 588SDX, and BG1.1, 2.1, 3.1, 4.1 and 5.1. The MH2 Mic Holder is a heavy duty black microphone slide style grip with metal insert for most USA microphones using the standard US 5/8 inch-27 threaded ends on base. The opening is 1.25" diameter opening tapers to 1.1". May not fit wireless handheld microphones. For Wireless Microphones buy either Performance Plus MH1 Universal Clothespin style Spring Loaded Clamping Mic Clip or the Performance Plus MH3W or MH4W Wireless Mic Holder.