Material: Silicone rubber+0.8mm² High-purity oxygen-free Tinned Copper wire Total 7 Colors:Black ,Red,Yellow,Green,Blue,White and Brown; Wire Length:4Meters / 13Ft each color/spool Voltage Rating: 600 Volts; Rated temperature: -60 - + 200; Bear Current:7.5A 18 Gauge silicone wire - super flexible 150 strands of 0.08 mm Tinned copper wire - Highly efficient - Super low impedance for a highly efficient connection Conductor: High purity Stranded oxygen-free copper with tin-plated, specification features high conductivity, low resistance and soft, can be bent arbitrarily, easy to welding, stripping, crimping terminals,connect,cut.