Description: Made of superior composite material The spring is high-elastic and anti-fatigue for long-time working Strong power and stable work With stable performance and rapid thermal diffusion, it can work for a long time at a stretch without heat Perfect tool for starter and professional tattoo artist Specification: Material: Aluminum alloy Size: approx 10.7 x 9.8 x 3.3cm / 4.21 x 3.86 x 1.29 inch Working Voltage: 3V - 9V Coils: 10 wrap Color: Green Package Includes: 1 x Tattoo Machine