General description 250 grams of 25% Silver Welding Rod designed for brazing copper. This alloy, composed of copper and phosphorus, offers high fluidity and economical use, making it ideal for soldering copper to copper without the need for additional flux. Technical specifications Weight: 250 grams Silver content: 25% Alloy composition: Copper / Phosphorus Usage Suitable for brazing copper components. Can be used without additional flux when soldering copper to copper. For other materials, additional flux may be required.