REPLACEMENT MICROPHONE WINDSCREENS: Make your aviation headset like new! Compete Audio’s microphone foam windscreen covers are a perfect fit for Lightspeed and ASA HS-iA headset models. | Universal Fitting Quality Dense Foam | FITS AVIATION HEADSETS: Not another generic replacement! Designed specifically for aviation headsets, the windscreens ensure a seamless fit. | Outside dimension: Diameter 22mm Length 40mm (can be cut to suit) Inside dimensions (hole size): Diameter 10mm (will also fit rectangular mics) Length 35mm Retaining ring dimensions: Diameter 15mm 1.5mm cross section | 10 x Pilot Headset Microphone Foam Covers (Type 2) Fits many makes & models, David Clark, Lightspeed, Sennheiser etc. Please check dimensions below to ensure fitment. Best quality extra thick foam to resist wind noise and provide clear speech