Auto Darkening Welding Helmet, Lens Shade: 9 to 13, viewing area: 3-4/5″ x 1-7/10″, headgear: ratchet, series: 600S. Auto Darkening Welding Helmet, Red/Black, 600S, 9 to 13 Lens Shade Review Tagged on: Lincoln Electric Personal Protective Equipment Safety & Security Tools & Home Improvement Welding Helmets LoneKing June 29, 2018October 15, 2018 Head Protection No Comments