PB37/SN63 rosin core solder. FLUX 2.0%. Wire diameter: 0.3mm,0.4mm,0.5mm,0.6mm,0.8mm,1.0mm. A:04mm B:0.5mm C:0.6mm D:0.8mm E:1.0mm Melting point: 361°F/183°C. Good solderability, insulation resistance, No spattering and Non-corrosive. Widely used in electrical and electronics, solder parts like circuit board, electronics devices and others. Size: 2.2 x 1 inch / 5.5cm x 2.8cm. Length:10 m.Approxi Gross Weight :30grams Package Includes: 1 x Tin Lead Soldering Wire Reel