🔒 Weld with Confidence: No Rules, No Limits! Easily adjust shade settings with external controls. Experience superior optical clarity with a 1/1/1/2 rating. Two independent arc sensors ensure you never miss a beat. Harness the sun with solar cell technology and battery assist. Seamlessly switch between welding and grinding modes. Dual arc sensors Variable shades 7-13 Solar-powered The Lincoln Electric K5431-1 No Rules No Limits Welding Helmet Kit is a cutting-edge welding helmet designed for professionals. It features auto-darkening technology powered by solar cells with battery assist, continuously variable external control for shades 7-13, and dual independent arc sensors to eliminate blind spots. With an impressive optical clarity rating of 1/1/1/2 and grind mode capability, this helmet ensures optimal visibility and protection for all your welding needs.