Pilot Pen-FriXion Ball Color Sticks Erasable Gel Pens: Black, Blue, Purple, Magenta And Salmon. These pens allow you to erase and rewrite repeatedly without damaging documents. The thermo-sensitive gel ink formula disappears with the erasing friction of a rubber tail plug eraser on the pen. This package contains five 5-3/4 inch long 0.7mm erasable gel pens in assorted colors. Imported.