Flip-Up Spectacles with folded side shield. Stationary frame with ophthalmic grade zero power toughened lenses and Tilting (Flip up) frame fitted with either Blue for Furnace, Green shade No. 4 for Gas cutting and Dark Green shade No. Our Flip-Up Spectacles are available at most competitive price. 11 glasses for Arc Welding. USES: Welder's Helper, Welding in Confined Spaces and Pressure Vessels for Short Duration, Furnace Operators, Supervisors and Managers.