Rockville R8G250-Black 8 Gauge Black Amp Power Wire Spool - 250 Feet Rockville R8G250-Black 8 Gauge Black Amp Power Wire. Gauge: 8 Gauge. Wire Length: 250 feet. Rockville Cool Cable Technology. Special Winding Configuration Reduces Unwanted Noises and Maximizes Current Transfer. High Purity Oxygen Free Copper Standing. Incredibly Flexible Yet Extremely Durable. Thick Protective Ultra Soft PVC Translucent Jacket. Braided Super-Flex Design Ensures Optimum Surface Area and Flexibility. Designed for Show Car Performance. 1 Foot Markings on Wire Make it Easy to Read and Easy to Cut to Appropriate Size. Ultra-Pure Copper Conduction. High Current Competition Class Power Cable. Eliminates Noise from the AC Line. Shielding From RFI and EMI. Resist Abrasions, Chemicals, and Temperature Extremes. Rated at 110C (Celsius) / 230F (Fahrenheit). Guaranteed to Make Your Amplifier Run Cooler and Sound Better. Stranding: 7 x 62 x 0.15mm (7 Ropes Consisting of 62 Strands of 0.15mm Wire). Color: Black.