1pc Features: It is suitable to weld and braz. Cutting by Professional cutting machine and use safely. After that be sure to rinse and dry so that without any water spots. For a nice thermal conductivity,electrical conductivity,corrosion resistance. This product might have few fingerprints, you can clean by super-fine steel-wool before using, Red copper is 99.9% pure copper. It fully demonstrated the ductility, electrical conductivity and corrosion resistance of copper metal.