Copper Clad Aluminum (CCA), both performance and economy,good actual performance can also provide an affordable price.Good choice of Cable.Premium Power/Ground Wire. 4 Gauge CCA Cable,Flexible PVC Jacket,Loads of 100A,Length:Red &Black each 25ft. Complimentary some suitable size lug terminals and 3:1 heat shrink tubes guarantee a good user experience. No additional purchase required. Rugged pvc sheath, best for indoor use, but with flexibility, elasticity and impact resistance,and great polarity identification. Wide range of applications:as power wire, ground wire, trolling motor wire, automotive wire, speaker wire, car radio wire, amp wire, electrical wire. 8 Gauge Wire (25ft Each- Black/Red)