The PaperMate InkJoy system aims to put the joy back in writing with a unique low viscosity black ink that flows easier for smooth writing with less drag. It also features a improved nib that delivers clear and crisp lines. The InkJoy 100 has a neat triangular shape that provides extra comfort to your fingers and gives precise control for any kind of writing or drawing. The medium 1.0mm nib writes a 0.4mm line width. These pens come supplied in a pack of 50.