good product

Effective, the pen indeed draws a 1cm wide staff. Very practical when you want to quickly but neatly scribble a few notes on a corner of a sheet. Also effective for making a beautiful music sheet: you need to use it with a ruler (like when drawing a line with a normal pen) and not freehand as in the presentation photo. You have to press firmly and don't hesitate to go over once or twice in case the five lines are not all well drawn. It's very easy and super practical when you write your own notes.

Meh. We've seen better ballpoint pens

Super ! Emploi facile