3MTM SpeedglasTM Welding helmet G5-02 with self-obscuring glass lens curved. Thanks to improved optical properties, curved welding lens 3MTM SpeedglasTM G5-02 lets you more easily recognize colors by technology 3MTM SpeedglasTM Natural Color. Presents the visual field of the ever wider self-obscuring lens (150 mm x 76 mm), thanks to technology 3MTM SpeedglasTM Curved Glass. Clear state 2.5 with dark gradients variable 8-12. By choosing the right setting for each activity, you can reduce eye fatigue and improve welding quality. The detection sensitivity of the arc can be adjusted to obtain a reliable passage, without comparisons. It offers high sensitivity arc detection, ideal for TIG welding operations. Adjustable delay function to set opening time from dark to light.