MG Chemicals 60/40 Rosin Core Leaded Solder, 0.032" Diameter, 0.6 oz Pocket Pack RA Flux Core Meets J-STD-004 / J-STD-006 Non-corrosive and electrically non-conductive flux residue Standard flux core percentage at 2.2 percent, melting point: 183 degree C/361 degree F 1/32" Diameter