Twin Pen, designed by Gerd A. Müller, is an efficient writing system housing both pen and pencil. One only has to twist, and Twin Pen switches from ballpoint pen to pencil. Underneath a removable button, one will also find an integrated eraser and a system identification ring.
Twin Pen is available in black or steel.
Touch screen refill M70 is also available.

Design: Gerd A. Müller / Germany
Materials: matte black lacquer / stainless steel
Includes: Refill M21 black / .5 lead HB