3M Rugged Comfort Half Facepiece Reusable Respirator, 6502, medium, 10/case The 3M Rugged Comfort Half Facepiece Reusable Respirator 6502 combines comfort, durability, and stability. Product Information Brand 3M Part # 7000128238 Origin Country USA Product Type Facepieces Size Medium Product InformationAlways use 3M Half Mask Respirators with the correct respiratory cartridgesBayonet connection is compatible with all bayonet-style 3M Cartridges and FiltersFor workplace/occupational use onlyIncludes the 3M Cool Flow Exhalation Valve that enhances comfort by reducing heat and moistureKeeps its shape in high-heat environmentsLow profile half facepiece design offers a wider field of view and better compatibility with welding and grinding shieldsOvermolded design simplifies cleaning and maintenance with fewer parts and crevices for dirt and debris buildupResilient silicone faceseal helps provide comfort, durability, and stability with a soft but firm seal