The pins fit comfortably in your hand. But I feel as if the ink were either filled halfway dried or not right. In any case, the lines are very thin in a short time and are no longer closed. One must then only the pen for a while with the tip stand down so the ink lags again. Then you can return for - work with time - relatively short.
It's frustrating. Since it's my first pins that mark, I can not comment on whether that's in the whole series so. But with my pencils it is so. Both in black and red in color!
