Helmet Accessory Grouping Lens Covers, Front Lens Cover, For Use With VIKING (TM) 1740, 1840 Series, Plate Size 4-1/2 in x 3-15/16 in, Thickness 0.25 in, Filter Shade 3, Clear, Improve Visibility and Reduces Eye Strain. This item has been restricted from sale in the following state (s): []