Refill for the ergonomic rollerball with fountain pen ink for (learning to) write at school. All the advantages of a fountain pen and rollerball combined in one unique pen for children. The unique design eliminates cramps and premature finger fatigue while writing, allowing children to enjoy (learning to) write at school more. · For children aged 6 and up · Ensures a relaxed writing posture, prevents hand cramps · Left- and right-handed versions · Firm grip thanks to the non-slip grip zone · Clean writing result, does not leak, drip, or scratch · Easily refillable with STABILO EASYoriginal refills in blue (erasable), red, or black · Each refill has a new nib · Glides very easily over paper thanks to the plastic rollerball tip · The pre-molded grip zone intuitively guides the child into the correct writing posture · Line width 0.3 mm · Refills also available in 0.5 mm line width (blue) To support novice writers on their journey to legible handwriting, the STABILO EASYoriginal rollerball was developed. The ergonomic, non-slip grip zone provides grip, support, and intuitively the correct writing posture, thanks to the finger indentations. This prevents premature muscle fatigue in the hand and pain or cramps while writing. The smoothness with which the rollerball tip glides over the paper ensures effortless writing. In addition, the ink flow is specially adjusted for beginners, which prevents the ink from smudging and results in clean handwriting - even for left-handers. The ball in the tip only releases ink when it moves on the paper. Excessive ink delivery is therefore a thing of the past, meaning no more drips, smudges, or blue fingers. Each refill comes with a new nib, so if a nib gets damaged, it can be replaced by inserting a new refill. Stabilo Easy orig refills blue fine