2" X 4-1/4" WELDING HELMET CLEAR LENS - High quality material offers superior protection from dust, weld spatter and impact. Fits Forney 55663 ("Slim Line"), 55666 ("Bandit I"), and 55680 ("Super Slim") welding helmets and most brand name helmets using a 2 in (50.8 mm) x 4-1/4 in (107.95 mm) window opening.