Foam Windscreen - QUANTITY OF 6 WINDSCREENS PRICING FOR QUANTITY OF 6 FOAM WINDSCREENS Works on Smith Corona, Plantronics and GN Netcom headsets Foam mic covers for your headsets - 1" long with 1/4" opening Controls sound from breathing in mic Universal standard size for office headsets, not bluetooth or wireless - Contact HEADSET WORLD USA with any questions regarding compatibility