Ballpoint pens are available for purchase with a variety of different ink cartridges.
Ink cartridges consisting of a simple plastic tube, such as our inexpensive STAEDTLER BALL PEN, offer the following specific features:
- Selection of line widths: F (approx. 0.3 mm) and M (approx. 0.5 mm)
- Available in red, blue, green and black.
- The transparent barrel lets you see the ink level at all times.
- Very smooth writing experience without having to exert a lot of pressure.
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