3M™ Speedglas™ 9100 Series Welding Helmets protect workers from radiation, heat and sparks, while providing a precise view of your work.Get an auto-darkening helmet with optional side windows and seven variable dark shades (5, 8 and 9-13) for most types of arc welding, with 3M™ Speedglas™ Welding Helmet 9100 Series3M™ Speedglas™ Welding Filter 9100 Seri