https://alexnld.com/product/toolour-2pcs-lead-free-solder-wire-1mm-welding-iron-wire-reel-flux-2-0-wire-melt-rosin-core-solder-wire/?hilite="0.5/0.6/0.8/1.0mm 63/37 FLUX 2.0% 45FT Tin Lead Tin Wire Melt Rosin Core Solder Soldering Wire Roll"