Made of aircraft-grade aluminum. The tattoo pen adopts CNC integrated carving process, which makes sure machine parts are wear-resistant. A short stroke length (1.8-2.8mm) means your needles are going to move slowly, retract less, and hit gently. short strokes are for soft shading and blending work. Tattoo artists who specialize in hyperrealism and black & gray rely on soft stroke lengths a lot to get those smooth, seamless blends. This tattoo pen adopts a brushless motor and works powerfully. Less heat. Generally, its service life is more than 3000 hours. Professional Motor Tattoo Machine Motor Tattoo Machine Set comes with a professional motor tattoo machine that ensures tattoos