Tattoo with confidence and trace your creative vision with a firm grip using the Mast. With the sleek, super-lightweight pen tattoo machine, you can count on the precision and accuracy of a pen-style machine as well as unmatched versatility. Employing a specially designed mechanism, the Mast Flex pen operates by returning to its initial position by its motor, rather than by the spring. Using this special mechanism, this Rotary tattoo pen machine is as effective as a hard-hitting coil when it comes to line work. Combined with the lightweight body and super low center of gravity, you¡¯ll be sure to have a firm grasp on your machine, inspiring focus, steadiness, and precision. Designed for comfortable, clean, and efficient tattooing. Specifications: Weight: 134g Size: 38mm*97mm Motor: Coreless Motor Stroke: 3.5mm Speed: 12V/10000Rpm