Southwire 25-ft 8-Gauge Solid Soft Drawn Copper Bare Wire (By-the-roll) in the Ground Wire department at Lowes.com
Amazon.com: InstallGear 8 Gauge Amp Power Wire (25ft) Copper Clad Aluminum CAA - 8AWG Wire, Automotive Wire, Car Amplifier Power & Ground Cable, Car Audio Speaker Stereo, Battery Cable, Welding Cable 8ga
DOWN4SOUND 8 GAUGE CCA SPEAKER WIRE ( RED/BLACK ) - BY THE FOOT - Down4Sound Shop
Sky High Car Audio OFC 8 Gauge Speaker Wire 1ft-100ft
XWF88PK 8 Pack of 8-Gauge Wire Ferrules with NVX Heat Shrink
8 Gauge Silicone Electric Wire, EvZ 33ft 8AWG Flexible 2 Conductor Parallel Cable, 2pin Red Black, High Temperature Resistant, Single Color LED Strip Extension - Amazon.com