Fits many Military, Commercial Aircraft, Sportscaster and Police style headset microphones with up to a 0.375-inch outside diameter. This windscreen is treated with a proprietary water repellant / wicking treatment that meets Military requirement standards. Including, the 100 hour float test and 24 hour 4 gram maximum water absorption test. Minimum acoustical performance of 100hz. to 20kHz. FSC Code; 5956, National Part Number; NSN 5965-01-411- 1856. Also fits most podium and headset style microphones
