Professional welding helmet with large viewing area and fast switching. Automatically changes to the required amount of shade using arc sensors. Suitable for use with Arc, MIG & TIG Welding processes as well as grinding. Adjustable headband provides a comfortable no-slip fit while leaving the hands completely free for working. DIN 5-13 Lens Lens Switching Time: 0.001Sec 4 Arc Sensors Suitable for MIG, TIG & Arc Welding With Grinding Mode Adjustable Head Band 100% Polypropylene Construction Shade Adjustment DIN 5-13 Lens Lens Switching Time: 0.001Sec 4 Arc Sensors Suitable for MIG, TIG & Arc Welding With Grinding Mode Adjustable Head Band 100% Polypropylene Construction Shade Adjustment