Improve Your Welding Technique - If your welding isn't as good as you'd like it to be, an Auto Dimming welding helmet can make a substantial difference because you know exactly where the weld will start. Auto dimming lens darkens from almost clear to the user preset 9-13 shade in 1/20,000 second. 3-3/4" by 2-7/16" lens provides an ample view area. Great for most Stick, MIG, and TIG welding functions. Provides full face and neck protection. Adjustable head band. One Year manufacturer's warranty. Imported.