Copper tubes are mainly used for generators, busbars, cables, switches, transformers and other electrical equipment. Heat exchange, electrical conductivity and formability are good, but poor strength and hardness. Features: Fine ductility and corrosion resistance and weldability. Can be made into all kinds of semi-finished and finished products by cold, hot forging. Excellent electrical conductivity, used in the manufacture of wire, cable, brush (electric), etc. Good thermal conductivity, used in the manufacture of magnetism instruments or meters that need anti-magnetic interference, such as compass, aviation instruments, etc. Wonderful formability, easy to process under hot and cold pressure, can be made into tube, rod, wire, strip, ribbon, plate, foil, etc. Specifications: Material: Copper Outer diameter: 4mm / 0.15\" Inner diameter: 3mm / 0.11\" Thickness: 0.5mm / 0.02\" Length: 2m / 78.74\" Weight: 115g (approx.) Package includes: 1 x Copper tube Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in pictures may be showing slightly different from the real object. Please take the real thing as standard.