The battary inverter cable is made of 100% Pure Copper Wires with Nickel-plated Copper Terminals which can offer maximum power transfer and corrosion protection. 20in 4AWG Gauge Inverter Cable, a set of positive (Red) and negative (Black) small cables,greats for connecting batteries in parallel or series. With the highly flexible insulation case can resists abrasion,cut,tear,flame, grease,oil,and water. Max load flow: 200A (12V), it is used to connect power inverter,motorcycle,automotive,marine,solar,ATV,RV.