supply of half face mask secure click speaking , half face mask secure click speaking diaphragm is designed to help provide easy communic ation. easy, one-touch seal check helps increase worker confidence that the respirator is being worn proper ly. model: hf-802sd ,d8003 ov/ag, secure click organic vapour, acid gas cartridge for secure click nio sh-approved d7p71 p95 particulate filter for respiratory protection against certain oil and non-oil-based par ticulates.component works with 3m(tm) secure click(tm) respirator 800 series and 3m(tm) secure click(t m) cartridges d8000 series model: d8003(pair)+d7p71(2pairs)+d701(pair) make:3m or similar [ warranty period: 30 months after the date of delivery ] ]