ArcOne 2500V-0110 Professional Grade Carrera Welding Helmet Shell with 2500V Auto-Darkening Filter, Carbon Fiber Professional Grade Carbon Fiber Carrera Welding Helmet Ideal helmet for the occasional welder, maintenance operations, or just your company on a tight budget Auto-Darkening filters are ANSI, CSA and CE approved Sensitivity is variable Two sensors, in regulation and a 7.25 inch viewing area