Phos-Copper ,Phos-Copper-Silver ,Silver-Copper-Zinc,Silver-Copper-Zinc-Tin,Silver-Copper-Zinc-Cd,Copper-Zinc,Aluminum base copper ... rods / solder rodsPhos-copper ,Phos-Copper-Silver ,Silver-Copper-Zinc,Silver-Copper-Zinc-Tin,Silver-Copper-Zinc-Cd,Copper-Zinc,Aluminum base ... perfect welding effect.Needn't to use flux when brazing copper and silver objects,the joints have good strength. ...