3M Speedglas 9100 Series Auto-Darkening Welding Filters continue the tradition of outstanding 3M ADF optical quality, including uniform shading and minimal distortion across the entire filter viewing area. With a range of settings available, the user can select the right mode for each task. This helps reduce eye strain and improve the quality of every weld.3M Speedglas 9100 Series Auto-Darkening Welding Filters are designed for the professional welder. Incorporating dark shade ranges 5, 8-13, grinding, and cutting modes, these filters are ideal for use with most arc welding processes.