... WZr8, WL10, WL15, WL20 2. Diameter:1.0 - 12.0mm 3. 150, 175mm Tungsten electrode 1. Item: WP, WT10, WT20, WT30, ... WT40, WC20, WZr3, WZr8, WL10, WL15, WL202. Diameter: 1.0 - ... COLOR SIGH CONTENT % IMPURITY % TUNGSTEN % LENGTH (mm) DIA. (mm) WT10 YELLOW 0.9-1.2 ≤0.2 MARGIN 75 ... , 178 0.5-10.0 WL15 GOLDEN YELLOW 1.3-1.7 ≤0.2 MARGIN 75, 150, 175, ...