10*Ottone Soluzione Flusso Nucleo Filo di Saldatura Fusibile Elettrodo Utensile 1,6MM X25CM Kit
Preheat before welding to 400~500 degrees after welding. Use copper gas welding when welding. -No solder powder, no other flux powder with brass as the core and coating as the base. Very convenient and easy to solder.