Cheap And Discounts 50g/roll lead-free copper tin wire, with a diameter of 0.5mm-1.2mm Sn/99.3Cu/0.7 solder wire and a flux content of 2.2% lead-fre Wholesale. Buy Directly From Merchant Shop1103533922 Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.