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Details: 1. Pure Tungsten electrode/ Green tips. 2. Ground finish quality. 3. Impurities ≤0.2% / Tungsten: 99.8% Advantages: 1. Provide great arc stability for AC welding with a balanced wave, as well as sine wave. Not typically used for DC welding. 2. Smallest electron emission./ Low steam pressure./ Low resistance./ Good electrical conductivity. 3. Applicability: Welding luminum and magnesium. Package including: 2pcs 0.040"*7" (1.0*175mm) 3pcs 1/16"*7" (1.6*175mm) 3pcs 3/32*7" (2.4*175mm) 2pcs 1/8*7" (3.2*175mm)