Description The Lincoln Electric 4-1/2 in. x 5-1/4 in. Replacement Lens replaces a scratched or damaged lens in a welding helmet. Crafted from durable polycarbonate, this lens is shatter resistant and protects against weld spatter. It offers excellent protection against harmful welding rays.Shade #10Hard polycarbonate prevents breakage and is abrasion resistantHelps the welder maintain clear visionPolycarbonate filter plates, as components of welding goggles or helmets, exceed the high velocity and high impact requirements of the ANSI Z87.14-1/2 in. x 5-1/4 in. size