Save Phace RFP 40VizI4 Series Welding Mask The "Best of the Best! This RFP was voted as "THE" Best Welding Helmet in the World! The RFP features the WORLD's LARGEST viewing area of over 40 Sq. Inches AND the ONLY Welding Helmet in the WORLD that has an Integrated 4"x4" ADF integrated into a 180 degree Welding Lens giving you ear to ear vision when welding! Features World's LARGEST Viewing Area of OVER 40 Sq. Inches! World's 1st AND ONLY 4"x4" ADF Integrated into a 180 Degree Welding Lens! World's FASTEST Protective Lens Change System! New Articulating Multi Point Adjustable Halo Headgear! Includes 2 BONUS Flex Fit Front Protective Lenses!