Replacement 2 inch x 4-1/4 inch hardened welding lens. Meets ANSI Z87.1 Safety Standards. Fits Forney 55663 (Slim Line), 55666 (Bandit I) and 55680 (Super Slim) welding helmets and most brand name helmets using a 2 inch x 4-1/4 inch window opening. UV or IR protection. High quality material offers superior protection from dust, weld spatter and impactFits most brand name helmets with the same size openingMeets ANSI Z87.1 safety standardsProvides 99.9% UV-AB protection from the sunPlastic #8 shaded4-1/4 in. X 2 in.The Forney 57010 Replacement 4-1/4 in. x 2 in. #8 Shaded Lens. 4-1/4 in.(107.95 mm) x 2 in. (50.8 mm) #8 Shade Welding Lens. Meets ANSI Z87.1 Safety Standards. Fits Forney 55663, 55666 and 55680.