http://webbuildingnews.net/story.php?id=51090 3M Organic Vapor Cartridge designed for use with 3M 6000 Series Half and Full Facepieces and 3M 7000 Series Half and Full Facepieces with bayonet style cartridge holders. 10 pair per case. Thu, 10 Jun 2010 21:25:22 PDT en