... . Diameter:1.0 - 12.0mm 3. 150, 175mm Tungsten electrode 1. Item: WP, WT10, WT20, WT30, WT40, WC20, WZr3, WZr8, WL10, WL15, WL202 ... .00, 150.00, 175.00mm4. Quality of surface: ground finish. DESIGNATI COLOR SIGH CONTENT % IMPURITY % TUNGSTEN % LENGTH (mm) DIA. (mm) WT10 YELLOW ...