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9100 Air welding helmet, 9100XXi self-darkening filter and Adflo air-driven unit. The special silver front frame 9100XXi allows external control, quick and easy access to grinding and memory modes. Can be locked in any shade, eg in state 3 light, when sanding. Adjustable flash detection sensitivity. Improved optics in the new 3M ™ Speedglas ™ 9100XXi welding cartridge provide greater contrast and natural-looking colors Seven variable degrees of blackout 5, 8-13. Excellent performance with the TIG welding method and extra large display area. The switching time (light-dark) is 0.1 ms. Adjustable flash detection sensitivity. With the right type of filter, the Adflo unit is an effective protection against particles and gases - all in one system