Beefy 10 Gauge Silicone Wire by World Champions ACER Racing, Super Flexible 1000 Strands of copper wire.  50 Feet total (25 feet black and 25 feet red wire). Super low electrical resistance for a highly efficient connection.  If you need 12 AWG, 14 AWG or 16 AWG wire we also sell those sizes in our eBay store.