Solder Wire 63/37 Tin/Lead with Flux Rosin Core for Electrical Soldering 0.8mm(0.032")This 63 37 tin lead solder wire with rosin core flux is perfect for electrical soldering, offering excellent conductivity and a reliable, strong bond. With a diameter of 0. 8mm (0. 032") and weighing 1lb (450g), it provides ample supply for various soldering projects. The rosin core flux ensures smooth and efficient soldering, reducing oxidation and improving the quality of your joints. Ideal for professional and DIY use, this solder wire ensures