3M™ Speedglas™ 9100 Series Auto-Darkening Welding Filters are designed for the professional welder using 3M™ Speedglas™ Welding Helmet 9100 Series. Incorporating dark shade ranges 5, 8-13, grinding, and cutting modes, these filters are ideal for use with most arc welding processes.For an auto-darkening filter with seven variable dark shades (5, 8 and 9-