Pilot Birdie Twin Ballpoint and Mechanical Pencil
The Birdie series by Pilot Japan is made of durable stainless steel.
The Twin model contains both a mechanical pencil and a ballpoint pen hidden in the end cap. It is a very slim and compact pen that asks to be carried around in your bag or purse.
Mechanical pencil refills with standard 0.5 mm pencil lead. Pen refills with a pen unit sold separately.
Measures about 12 cm in length. Diameter of the barrel measures about 0.5 mm.