Tramo 4PC Bulk colorful Wireless Mic Battery Screw on Cap/cup/cover Microphone Cover for Shure Wireless Microphone System Handhold Pgx24/slx24/sm58 Microphones Battery Cover for Mic 4pc Battery Cover for Shure Pgx24/slx24/sm58 Fits Shure microphones very nicely Easy to identify mic from distance. Solid plastic quality.