The Pilot FriXion Pen allows you to erase ink as easily as you would a pencil mark! Simply use the eraser on the end of the pen to remove ink via friction generated heat. The smooth ink flow prevents blots and bleeds ruining your page. An ergonomically designed grip provides comfort in use, even over protracted periods of writing. The 0.7mm nib writes a 0.4mm line width. This pack contains 12 black pens.