Check the listing for details. 2-Pack RK320 Replacement Microphone Grille For Shure Vocal Mics Beta56 Beta57A. Condition: New. Listed at 9.99 USD. 2-Pack RK320 Replacement Microphone Grille For Shure Vocal Mics Beta56 Beta57A Well packed in solid paper board box, ship with tracking number, buy with confidence! Free Shipping to worldwide! Brand New Ball Head Mesh, Microphone Grilles Fits Shure Beta 57A Microphone - Die-cast with Blue ring, • Replacement for Shure Beta57 Microphones • New replacement microphone grille (ball) with built-in foam windscreen •Die-cast zinc sphere retainer rings. •With inner foam filter to reduce wind, breath, and pop noises. •Standard thread size fits most brand name ball-shaped dynamic microphones. This ball has a standard thread size that will fit many microphones, such as: Shure Beta57 series, and other microphones with the same threading. •NOTE: These do NOT fit the bigger diameter SM58 Beta58, etc.