3M 500025 9100XX Automatic Darkening Filter FeaturesSpeedglas welding filter 9100XX is made for professional welders and uses seven variable dark shades (5, 8, and 9-13) for most arc welding types. Viewing area 73 x 107 mmSelect the correct settings for each job to reduce eye strain and enhance the quality of each weld.The open state in any shade, e.g., grinding, can be locked at position 3Delay function to adjust the time to go from dark to lightSensitivity of arc detection can be adjusted as desired.Recommended Industries / UsageSpeedglas 9100, Speedglas 9100 Air, Speedglas 9100 FX, Speedglas 9100 FX Air, Speedglas 9100 MP, Speedglas 9100 MP-Lite, Speedglas 9100-QR