The Tattoo Pen is the only pen made specifically for drawing directly onto the skin for pre-tattoo purposes. It was researched and developed by Tim Hendricks and tested by some of the best tattooers in the world before it was available for the Tattoo Industry. Each brass refill is sold at a low enough price to be single use and disposable for sterility purposes. The Tattoo Pen boasts a 1.6mm ball point standard, 1.0mm fine line point, a sturdy 100% solid brass refill, an easy to change out solid steel holder, and an assortment of SEVEN different colors including red, purple, blue, black, pink, orange and green; specifically researched and developed to work with a tattooer's proper need to draw directly onto skin. It was created, tested, and now provided by a tattooer for tattooers, and it is the only tattoo pen that is MADE IN THE USA. There is absolutely no substitute for the Tattoo Pen.