Lincoln KP2898-1 VIKING 750S, 850S, 3350 Outside Cover Lens Pkg = 5 Go to amazon.com Related posts The 8 best welder helmet lincoln for 2022 FeatureLINCOLN ELECTRIC KP 2898-1 DescriptionLincoln KP2898-1 These are replacement outside clear lenses for the 750S, 2450 & 3350 series welding helmets 5 lenses in each package.