Premium Quality: The welding helmet lens is made of PA plastic, and compact, for a long time use Performance: The solar welding helmet lens adopts highly sensitive arc sensor, which has stable and performance Reduce Fatigue: The welding mask lens has large view window providing clear and larger viewing perspective, and reduce fatigue of eyes Cost-effective: The welding lens auto darkening is used with a solar panel to for battery of welding helmet which can prolong the service life of the welding helmet Considerate Service: If you have any question about welding helmet replacement lens, please feel to contact us, it's our pleasure to answer, Weight: 0.1998269942768 pounds, Manufacturer: Yosoo Health Gear