Armex gray safety glasses. lens: polycarbonate, curvature 8, standards en 166- en 172. marking 5-3.1 1ft kn ce. lens treatments: anti-scratch plus, anti-spray plus, uv 400. frame: front: nylon, pins: polycarbonate + tpr. named en166 ft ce. soft nasal bridge, final part of soft pins. for external work, mechanical work where there is a risk of glare, agriculture, construction and refinery.