Peak Proteus Pen Machine — Matte Black w/ GrayPeak Proteus Tattoo Machine in Matte Black with Glossy Gray Ring Pen Style Rotary Tattoo Machine with Adjustable Stroke The Peak Proteus pen tattoo machine lets you tattoo in any style with ease, offering 7 stroke options. Change your stroke on the fly just by turning the stroke adjustment knob. The knob uses a click system and a secure locking mechanism that ensures your stroke wont change involuntarily while tattooing. The Peak Proteus Pen is also