4″ Red Battery Link Copper Cable 4Ga 4 inch 100% High Quality 4 Gauge Cable 4AWG - RED 4" Interconnect Cable. 100% Pure OFC Copper Conductor: Unlike cheap copper-clad aluminum (CCA) cables, this cable is made from100% Oxygen-Free Copper (OFC). Upgrade your power system with the ultimate in conductivity and durability. byJuly 3, 2026