Introducing the Hornet Tattoo Pen. This machine has an ergonomic and compact design. The shorter size and robust grip design gives your hand a perfect balance. This unique design allows your hand to be more maneuverable. This pen has a 3.5mm stroke and is adjustable to shorten the swing. Great for lining and shading. This machine is powerful enough to handle any needles size. From 3 Liners to even 27 Magnums this machine can handle any needle type. Works with all standard cartridges. Includes an RCA Cord as well. Product Specs: Machine Height: 3.5" inch tall Grip Width: 1.25" inch wide Machine Weight: 3.9 oz Operating Voltage: 6 – 7 V Cartridge Type: Universal & works with all cartridges. Needle Stroke: 0mm to 3.5mm and adjustable. Connection: RCA Cord Connection (Included) Motor: Precision Japanese motor Color: Green, Orange, Black, & Silver Warranty: 90-Day Warranty.