Cofra colorless lighting safety glasses. lens: polycarbonate. 8. standard curvature en 166 - en 170. marked 2c-1,2 1ft ce. anti-scratch treatment, anti-fogging, uv 400 protection. frame: polycarbonate, temples: polycarbonate tpr. en166 ft ce marked. adjustable, smooth nasal bridge, smooth end of the pins. for mechanical work in closed places with good visibility conditions. excellent fit to the face, indirect ventilation.