Power your Tattoo Machine with this 7.5 feet long cable. The on/off switch and voltage are controlled by the digital control system in the center of the wire. Great for daily use, but really great if you are a traveling artist. Also a great backup, just in case your power supply goes out. Voltage - 5 to 12 volts. Machine Connection - RCA, DC, & Cheyenne. Cord Length - 7.5 feet long