Ikapok 2 Pack Microphone Anti Roll Silicone for Shure BETA 58A Dynamic Vocal Microphones Feature: Microphone Slip Holder. Material:Silicon The Inner diameter:31MM Weight:9g each piece. Color:orange,blue,orange Use for wired sm58 beta58 microphone It is made of rubber and it can protect your microphone from shocks, bumps, and falls. Also doubles as shock mount for your microphone. package include: 2 pieces Microphone Slip Holder