The LAMY cp1 Brushed Stainless Steel Tri-Pen is an especially slender, cylindrical writing instrument with a massive, spring-action stainless steel clip. This 3-in-1 twist-action mechanism contains both a Black and Red Ballpoint, along with a .5mm Mechanical Pencil.
Refills:
Ballpoint - LAMY M 21
Pencil -LAMY M 41 (0.5mm)
Eraser - LAMY Z 15