3M Speedglas ADF welding helmet 9100 with SideWindows auto darkening filter 9100XX, dark shades 5, 8-13, sensitivity adjustment allows use with all Stick, MIG and TIG processes, also has grinding and torch cutting modes. All new headgear makes this helmet extremely comfortable and versatile. Viewing area 12.11 square inches. ADF size (approx): 11.75-12.25. Delay: adjustable delay. Features: advanced headgear. Mission type: aircraft, ships, vehicles. Number of sensors: 3. Operation type: facility safety, maintenance, repair and operations, overhaul. Recommended application: grinding, welding. Recommended industry: automotive, construction, food and beverage manufacturing, manufacturing, metal production and fabrication, military maintenance, repair and operation (MRO), mining, oil and gas, transportation. Sensitivity: variable (TIG greater than 1A and MIG/MAG, stick). Visor type: auto-darkening filter. Welding process: grinding.