2 x 4 1/4 Clear Magnifier Lenses come in a variety of diopter focal strengths to fit the degree of bluriness you need. These will fit all 2 x 4 1/4 passive welding helmets. Passive welding helmets are the old style, with non-auto darkening lenses. Magnifier lens like reading glasses help with farsightedness or hyperopia. Where far away items are clear but close up items are blurry.
