FindingKing 100 Dust Masks Face Respirator Antidust Chemichal Paint Particle Filter Tools 100 Dust Masks For Airborne Substances This is a new set of 100 dust masks These masks are disposable, light weight, comfortable and have good filtering efficiency making it easy to breathe Each box contains 50 masks They filter out fiberglass dust, saw dust, household or garden dusts and fibrous producing dusts Each mask measures approximately 4 3/4 (120 mm)Findingking works hard to update our description 014181349131