Wuko Direct Drive Tattoo Machine *Light Weight Material: CNC brass Color: Retro Starting voltage:2.5V Working voltage:4.5V Free Stroke and free Hex Key Kit: Machine comes with 3.5mm stroke on it, meanwhile, including 2.5mm and 4.2mm stroke. they could help you better to adjust machine, to adapt to different skin and tattoo design. the bearing dual eccentric cam system allows an infinitely adjustable stroke length between 2.5mm and 4.2mm Hint: short line equals short stroke, long line equals long stroke

Wuko Direct Drive Tattoo Machine