6 Pack, P95 Particulate Filters, For Workplace/Occupational Applications Only, Provides At Least 95 Percent Filtration Efficiency Against Solids & Liquid Aerosols & Is Strongly Resistant To Oils, Used For Paint Spraying, Solvents & Pesticides, Great Choice In Respiratory Protection For The Professional, For Use With 3M 501 Filter Retainer On #5000 & #6000 Series Cartridges Only, For Use With TV #218-111.