The Dragonfly rotary tattoo machine has a hi-performance motor with 6W mechanical output. High energy efficiency. Optimal for battery operation with the RPS-600. Runs all type of standard and cartridge needles*. Adjustable stroke lengths. you can choose between three stroke lengths. 2.6mm, 3.7mm and 4.5mm with the same eccenter. You can loosen one screw and twist the eccenter pin for the desired stroke length. Its very easy to convert between standard and cartridge needles. Also when using cartridges the stay up spring must be removed to prevent strain on the motor and to function properly. This is a great product and amazing quality for the price

Please watch our Dragonfly setup video below