AUCH 6 Sets Shakeproof Wireless Handheld Microphone Anti-rolling Mic Protection Silicone Ring & Bottom Rod Sleeve Holder Set for KTV Device, Multi-Colored(Total 12Pcs) It is made of silicon and it can protect your microphone from shocks, bumps, and falls. Also doubles as shock mount for your microphone. Use for wireless microphone protection, also identifies various stage microphones from the mixing board Inner diameter: 35mm Color: Grey, Black, Orange, Green, Blue, Purple Package included: 6Sets (6Pcs Anti-rolling Rings + 6Pcs Bottom Sleeves)