I saw this on the TV, and really wanted it - so I went and bought it. Let's just say, I was very disappointed.
Cons; The stencil did not fit round anybody's arm well
The actual pen was very thick, and could not fill in the stencils correctly
The pen's came off the skin very easily
The whole kit was quite breakable
The parts did not fit into the box correctly
Pros; Good if you want a cheap tattoo set
Overall, a poor piece of kit that doesn't work very well - I WOULD NOT recommend it to anybody!
Save your money and buy some washable pens!