Automatic Welding Helmet with XXL screen which features the latest Truecolor technology. Sensors on the helmet automatically detect the presence of an arc & change the lens from clear to dark in 0.08 milliseconds, protecting the eyes from the UV & infra-red light from the welding arc. Dual scale, adjustable shades & grind function. Suitable for professional use in MIG, TIG & MMA (arc/stick) welding. PLEASE NOTE: Oxyacetylene, laser or gas welding and cutting is not permitted with this mask.