Cover plates, which can be inserted directly in front of the shaded lens on each helmet type are used to protect the lenses from molten metal spatter, general scratching, and water. Deluxe Cutting & Blazing goggles, #5 protect s welder from infrared rays given off during gas welding, cutting, burning, and brazing (not suitable for arc welding). Economy Cup Brazing Goggles provide adequate protection for gas welding.