Suitable for all welding masks on black glass lenses which is eye-protection and anti-ultraviolet
PREVENTION OF ELECTRIC ARC: The magnifier lens has a significant effect on the prevention of electric arc and glass turbidity.
FIVE DIOPTERS: Available in five diopters for choices: 1.0, 1.75, 1.5, 2.0, 2.5, 3.0
REASONABLE DESIGN: Professiona