Product Features:Standard size replacement lens for helmets requiring a 2 inch (50.8 millimeters) x 4-1/2 inch (114.3 millimeters) lensMeets American National Standards Institute (ANSI) Z87.1 safety standardsWelding LensShade number 10Fits Forney Industries item numbers 55663, Slim Line, 55666, Bandit I and 55680, Super Slim welding helmets