Gateway Safety CPM225 Polycarbonate Magnifying Welding Lens, 2.25 Diopter, 4-1/4" Length x 2" Width, Clear Gateway safety lenses pass the high mass and high velocity impact tests of ANSI Z87.1+ and CSA Z94.3 standards Provide improved vision, which reduces eye fatigue and discomfort Available in clear color 2.25 diopter lens Measures 4-1/4-inches length by 2-inches width