CleanTex Microduster III Ozone Safe Duster with Valve Assembly, 10 Ounce Can (CT2511) Removal of dust, lint, and iron oxide particles from electronic equipment, optical surfaces, and precision instruments Precision valve assembly constructed of surgical-grade chrome-plated brass Attachable, flexible extension hose for increased cleaning depth Contains HFCs; 100% ozone safe; Nonflammable 10 ounce can