Each set of boom wires: red, white, blue, green, and black with 5 colors. Black is the ground wire, with a length of 400 millimeters Each wire is composed of soft and slender AWG32 # (with an outer diameter of only 0.4 millimeters) oxygen free copper (OFC) silver plated wire. The cartridge end is manually welded with 24K gold plated phosphor copper terminals, and colored heat shrink tubing is used to distinguish the sound channels for easy installation. Wire: Ultra fine and ultra soft AWG32 # (only 0.4mm outer diameter) oxygen free copper (OFC) silver plated wire Terminal: phosphor copper plated with 24K gold, durable and , high conductivity, high reliability, 1.2mm terminal suitable for 1.2mm Left and right cartridge pins Each set of boom wires: red, white, blue, green, and black with 5 colors. Black is the ground wire, with a length of 400 millimeters Each wire is composed of soft and slender AWG32 # (with an outer diameter of only 0.4 millimeters) oxygen free copper (OFC) silver plated wire. The cartridge end is manually welded with 24K gold plated phosphor copper terminals, and colored heat shrink tubing is used to distinguish the sound channels for easy installation. The materials are of high quality and the workmanship is exquisite. Pure manual lead-free soldering ensures high reliability and extends lifespan. The sound channels are distinguished by 4-color environmentally friendly halogen-free heat shrink tubing, making it easy to connect the cartridge. Wire: Ultra fine and ultra soft AWG32 # (only 0.4mm outer diameter) oxygen free copper (OFC) silver plated wire Structure: Manual soldering Terminal: phosphor copper plated with 24K gold, durable and , high conductivity, high reliability, 1.2mm terminal suitable