Schott SF-6 HT X-Ray Protective Lead Glasses, Gray Maxx Wrap Safety Frame, 62x18x145mm High-Lite transmissionwith 20% more visible light, 1.80 High Index Lenses Attenuation: 95% radiation reduction at 125 KVP Direct Beam Lead Equivalent Lens: 0.75 mm (+/- .05) Pb glass Frame Architecture: New DuraLite? frame technology for comfort and durability