Popular Rotary, Tattoo Machine Gun Tattoo Supply, Use: Turn on the power then it can work, Light weight, powerful easy to use for all tattooists, Small, silent, low vibrating and low heating, High performance, Great for lining, shading and filling excellent stability and feeling., Designed for use with standard needles, tubes, grips, and power supplies, The Tattoo Machine can work normally within 6-9 volts. It is recommended to use more than 1.5A power supply.