OXYGEN FREE COPPER (OFC) - Our primary cable OFC wire is the most economical option for choosing power or ground wire and is a great conductor of power. Oxygen Free Copper gives you an economic power cable with excellent power transfer. Systems that require more power should use OFC cable wiring. POWER / GROUND WIRE SET - Our bundled power wire set is great for a car amplifier or subwoofer or to be used as a ground wire on your electric wire installs. Use for many different applications such as indoor lighting, car radio, automotive, lighting, car speakers, power cables, 12v power inverter, ground wire, or welding cable. SOFT TOUCH JACKET - Soft touch jacket design designed for the electrical and auto repair installer in mind. Strong, yet durable PVC jacket that is best for indoor use but has flexibility, elasticity, and impact resistance built in. EASY POLARITY IDENTIFICATION - Easy color coded ground wire helps with installation to let you know which cable should connect to the terminal. Making a polarity error could cause serious damage to your audio equipment. WIDE COMPATIBILITY - Also known as power wire, ground wire, trolling motor wire, automotive wire, speaker wire, car radio wire, amp wire, electrical wire, or welding wire designed for up to 300v voltage. We have many gauge wires to choose from, such as 1/0awg, 4awg, 8awg with black, red, blue wire color options and 25ft, 50ft lengths