Uni Jetstream 4&1 Multi Pen - Metal Edition - 0.5mm are a professional, sleek upgraded version of the original Jetstream 4&1 multi pens. These Metal Edition pens come in modern metallic finish colors and although similar in function to the original 4&1 multi pens, these Metal Edition pens have some upgraded details. The grip section is knurled to allow for a more comfortable and secure grip when writing, and the tip of the pen as well as the eraser cap are made of aluminum, giving the pen a little bit of extra weight but with good balance since the additional weighted points are at opposite sides of the pen. Use these pens comfortably in business meetings and other professional settings or just to upgrade your daily note-taking and writing routine.