This is a cost effective system used by foundries, aluminum plants, mines, chemical plants, refineries, auto manufacturers, metal working and fabrications. Performance proven with a constant and powerful supply of breathable air from a clean air source, this Helmet offers protection from airborne contaminates including hexavalent chromium applications, flying debris, sparks, chemical and molten metal splashes. The helmet flips allowing user to grind and clean metal looking through clear ANSI face shield. Large #10 lens included. ANSI certified face shield and head protection. NIOSH approved.