Handmade by JML at LutzMultimedia LLC right here in NYC. A perfect replica, down to the spring loaded locking button mechanism. Don’t buy cheaply made PLA eBay clip that may or may not break after a couple months, get the best from the highest rated custom shop on reverb! These works perfectly and are available in white or black. Please make sure to specify which color you would prefer otherwise black will be sent. The spring loaded locking button mechanism functions perfectly as well. Please make sure to note if you need a European adapter or not otherwise it will not be sent with one. If you buy more than one and get combined free shipping! These are printed with the highest quality PETG plastic available and guaranteed to be stronger than an original AKG branded clip. NOTE: some of the early MD421 mic clip channels are a fraction of a micrometer narrower than all the rest (thickness of a hair). If the fit is a little tight simply run a Dremel blade against the inner groove that slides into the mic. If you and me your model I can do it for you but you only need to shave off the thickness of a hair to make it slide in easier. Any questions please ask. Thanks for looking. bulk orders welcome.