PERFORMANCE The Lincoln Electric 2% Ceriated (Grey) Premium Tungsten Electrodes offer excellent arc starts and stability, particularly on DC current, while also reducing oxide build up. The engineered 2% Lanthanated composition is recommended for low to medium amperage applications and is recommend for DC procedures but can be used with an AC current if desired. AVAILABLE IN 6 DIAMETERS Using the approriate size of tungsten is essential for optimal performance and efficency. .020"". .040"" . 1/16"" . 3/32"". 1/8"". 5/32"". ."