The Shure RK143G replacement grille lets you make your SM58 microphone look and perform like new! The tough metal mesh RK143G replacement grille is lined with foam for effective pop-filter functionality, and it's built to make your mic handle the rigors of even the toughest tours. SM58 mics are the workhorses of the industry. You'll find these mics on stages everywhere, and for good reason: they sound great, perform reliably, and survive the kind of abuse that would render most other mics unusable in a hurry. Sweetwater offers this replacement grille because we know that your SM58 is built to last. Make it look great and perform like new with an RK143G replacement grille!