25 Sticks BCuP-5 Silver Solder 15%, Dia0.042"x11" Map Gas Torch Kit, Welding Rods, Round, No Need Flux, Silver Bar for Refrigerators, Freezers, Copper HVAC, & Jewelry Making. Our professional testing to ensure that the content is within this range The welding rods 15% silver are good fluidity during welding.
eBay