LAMY Cp1 Twin Pen - Titanium Oxide - BlackHow often do you find yourself switching between pen and pencil in your day to day? Well no need to worry with a Cp1 Twin Pen. Ballpoint pen and mechanical pencil in one makes life easy and is very larry. Combine that with a built in eraser and you won't ever need to carry more than one writing instrument! Multi system pen in a matt black finish. Fitted with ballpoint pen refill LAMY M21 black and propelling pencil lead 0. 5 (LAMY M41) HB. With system