This kit comes with 3 Sm 57 and one Beta 52A along with mounting hardware and the handy carrying case. There is one mount missing. But I'm sure you can work your way around that. But remember there is one mount missing. The Beta 52a is designed for bass drum use and would work fine with a bass guitar. The SM 57s are the work horse of microphones. And everything fits neatly into the handy Shure carrying case. Great set, works great sounds great. I'll sell it for $300 shipped CONUS.