Review on Pair of Welding Helmet Magnifier/Cheater Lenses, Size 2" x 4.25", 2.00 Diopter Strength, Made of Glass by Jeff Addison

I have mixed feelings. On the one hand, glass lenses have excellent optics. On the other hand, the frame does not fit any of my helmets (Lincoln, Harbor Freight, Yeswelder). Requires filing/grinding/cutting of the plastic frame to avoid breaking the helmet lens mounts. You should not do this for a standard sized product. But if you're okay with the fit, they do what they're supposed to do pretty well.