Heavy Duty Safe Cables: Tinned copper wire has good electrical conductivity, thermal conductivity, stability, tinned copper can increase heat dissipation, improve electrical conductivity and improve wire performance. Tinned copper terminal: Tinned copper has good stability, wear resistance, corrosion resistance, which improves the oxidation resistance of copper and better maintains its conductivity. Battery Inverter Cables Set: A set of positive (red) and negative (black) battery cables, Greats for connecting batteries in parallel or series. Comes with Ring Terminals: Car battery cable copper equipped with 10mm metal ring clamps at both ends, for easy connection to battery terminals. Application: Widely used for battery bank wiring, inverter cable, ground cable, ship boat, motorcycle, automotive, solar. Automatic wiring applications and other applications.