【Product Highlights】Sensitivity is bit higher and faster switching time 0.15ms, fit most 2-Inch x 4-1/4-Inch welding hood.【Optical grade】True color highest optical 1/1/1/2, Our worry-free 12-month warranty, and friendly lifetime customer service.【Welding Lens Size】2" x 4.25"x0.2", Viewing Area 5.25-Inch, Most commonly used with Pancake, Pipeliner and Tigerhoods.【Auto Darkening Lens】Two independent sensors Light state 3, Dark state 11.【JHTii Welding Lens】High definition clarity in welding, see clearer weld puddle. Light blue tint in welding, no more dark green, decrease your eyes strain.