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. With a convenient retractable design and rubber grip for comfort in use, even over protracted periods of writing. The fine 0.7mm nib writes a 0.4mm line width. This pack contains 12 blue pens.