Ironlak is proud to release Strikers, our brand new technical drawing pens and sketch markers. These markers are very high quality with the alcohol base inks and nibs produced in Japan. Striker sketch markers are twin tipped with a medium broad chisel and fine tip. There are 5 sets with 20 mixed and different colors in each set, and no overlapping. Every sketch set comes in its own canvas carrying case that can be set to stand up for easy viewing.