Ergonomic rollerball pen + cartridge for beginners and pupils aged 6 and over. First rollerball pen in ergonomic design - especially for left and right-handers. Grip zone made of non-slip material. Relaxed handling to prevent premature muscle fatigue and pain when writing. Easy writing, therefore clean writing - does not smudge or scratch. A new writing tip comes with every new cartridge: guaranteed easy refilling. Optionally refillable with royal blue erasable school ink, black or red ink. The cartridges are available in 2 line widths: 0.3 mm (fine) in blue, for finer writing and 0.5 mm (medium) blue, black, red. With field for labelling. Cap can be attached to the end of the pen.