For attaching 5N11 and 5P71 filters and 501 retainers to 3M™ 6000, 7000 and FF-400 series reusable respirator facepieces or 3M™ Scott™ AV-3000 HT and AV-3000 SureSeal facepiece with 3M™ Scott™ AV-632 Bayonet Adapter
Used with 3M™ Particulate Filter 5N11 or 3M™ Particulate Filter 5P71 and 3M™ Filter Retainer 501.