Ballpoint pen, 0,35 mm, retractable, white barrel, UNI "SXN-155 Jetstream", red

Line thickness indicates the thickness of the writing produced by a particular writing instrument on paper or other surfaces.

The ball diameter indicates the size of the ball found in a writing instrument, such as a ballpoint pen, which is responsible for transferring the ink. In some brands, this value is specified instead of the line thickness of the pen. There may be a difference between the ball diameter and the line thickness, as they do not necessarily correspond to each other.

That group of writing instruments specifically recommended by manufacturers for left-handed individuals. The design of the pen and the drying speed of the ink allow left-handed individuals to use them comfortably without smudging the written text or getting ink stains on their hands.