Combination Cartridge/Filter, Bayonet, AM, MA, P100, Green, Magenta, 2 PK, NIOSHMfr #: 60924 NIOSH approved to help provide respiratory protection against ammonia, methylamine as well as non oil and oil particulates USE WITH 3M Half and Full Face Pieces 6000, 7000 and FF 400 Series with a bayonet style filter, cartridge connection or 3M Scott AV 3000 HT and AV 3000 SureSeal facepieces with 3M Scott AV 632 Bayonet Adapter SWEPT BACK DESIGN allows an enhanced field of view and increased comfort VARIETY OF USES: When properly