ArticleNo/ P/N: MT72N081 3M™ PELTOR™ Replacement Dynamic Mic MT72N081 Fits the following 3M Peltor headsets: MT72H540P3E-50 ATEX Twin Cup Helmet Mounted, MT72H540P3E-50-34 ATEX Twin Cup Helmet Mounted, MT72H540A-50 ATEX Headband. Price request