White Solder Tube : AWG 26-24,Cross sectional area 0.2-0.3mm². Red Solder Tube : AWG 22-18,Cross sectional area 0.5-1.0mm². Blue Solder Tube : AWG 16-14,Cross sectional area 1.5-2.5mm². Yellow Solder Tube : AWG 12-10,Cross sectional area 4.0-6.0mm².
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