The Hobart 770216 Welding Replacement Lenses improve safety by enabling you to adjust the safety parameters of your protective welding gear. The welding replacement lenses are ideal for the non-auto-darkening Hobart helmet 770257. These replacement lenses are also made with shade No. 8 and measures 2 in. x 4-1/4 in. Ideal for the non-auto-darkening Hobart helmet 770257 Measures 2 in. x 4-1/4 in. 8 Improves safety with adjustable safety parameters.