IWI's Multi 611 is a stylish 3-in-1 multi-function pen with 360 degree twist system. You can easily select the pen's function by aligning the clip with one of the three different marks (red, black, and 0.5) on the barrel to choose the mode of preference. The Multi 611 is a daily necessity for note-taking in school or office. Pen uses black and red D1 style ballpoint refills, 0.5mm leads.