Shure A25D Microphone Clip - Break Resistant Stand Adapter for Handheld Wired Mics with ¾” Barrel Diameter. A25D microphone mount for Shure wired microphones SM58, SM57, SM86, SM87A and BETA87A, BETA87C. Compatible with other wired mics with ¾” barrel diameter. Break resistant microphone holder with adjustable angle.