Information about the product: Color: Black Size: inner diameter: 13cm outer diameter: 15.5cm tube straightening: 37.5cm maximum clamp 3.5cm Package: 1 * Microphone Lockout Preventer Two Screen Pop Filter: The first screen blocks air bubbles like any pop filter normally would; the gap in between then disperses any remaining air pressure so that once the pressure passes the second screen it easily catches. Adjustable Gooseneck: The metal gooseneck holder supports the weight of the filter and holds it in place. You can adjust the angle and distance between the screen and the microphone. Universal Compatibility: Adjustable screw swivel clamp with anti-scratch gripper can attach to MOST tube bases or mic stands (Maximum diameter:15.5cm). How to use: Avoid the dreaded hissing and lisping sounds that come from pronouncing the letter S and blocking the ugly Explosives that follow B and P . It s a great item for singers and actors alike who want help in achieving the best possible performance and to help protect against spitting all over your vocal mic. Easy Assembly & Disassembly: Swivel bracket for easy assembly. Mic Stand and Shock Mount are sold separately not included.