Dragonhawk Cartridge Tattoo Machine Kit Pen Rotary Tattoo Machine Cartridge Needles Power Supply for Tattoo Artists 1013-7 Dragonhawk Cartridge Tattoo Machine precision DC motor, continuous operation, Low noise, Long-lasting stability, Light weight, unibody. Compatible with all cartridge needles. 10 pcs tattoo needle cartridges. Dragonhawk tattoo power supply fitted with rotary machine Switch frequency: 55-165 Hz. Needle protrusion: 0 - 4.5 mm. Length of the stroke: 3.5mm.