12 black/red/blue 0.5mm signature pens. This is a very classic ballpoint pen with a high popularity in worldwide. The quality of this gel pen has been tested by users in many countries worldwide. Schools, office, family, hospitals, business centers, etc. This gel pens are classic, with mature production technology, and uses very good plastic, metal, rolling ballpoint and ink. The writing is smooth, the ink is easy to dry, it will not leak ink and not drop the ink ball, without odor. This ballpoint pen can use for a long time. The rollerball pen can be written more than 400 meters or more lines, which will not be disconnected and the ink will not fade before finishing the ink. This ball point pens core can be replaced, and the gel ink pen holder will not be old, and it will not be damaged under normal use. Humanized design uses ring plastic glue, which can relieve hand fatigue during writing. It is especially suitable for student groups with large amounts of writing, classroom groups and office staff.