A Cheyenne Hawk Pen Unio is a versatile and ergonomic rotary machine. This machine combines the smoothness of Hawk Spirit for fine packing and smooth shading, and the power of Hawk Thunder for colorful lining and packing, all in one PEN machine.Cheyenne Hawk Pen Unio has an award-winning, ergonomic shape that is beneficial to the wrist preventing fatigue during long tattoo sessions. Its shape makes it simple to cover for hygiene purposes. Powered by a precision DC motor, it has a fully adjustable stroke from 2.5mm to 4mm, is quiet, and produces low vibration. Ideal for all kinds of work.The Cheyenne Hawk Pen Unio can be equipped with either the 25.4mm Grip or the Grip S, as well as with disposable Grips available in three different sizes and shapes, Ergo Round, Ergo Long and Ergo One Inch.