Pentel Sign Pen, Fiber-Tipped, Black Ink  (S520-A), Box of 12 The original fiber-tipped pen Bold, robust ink color allow for unsurpassed sketching and coloring Snap-fit cap prevents ink from drying out Generous supply of vivid, water based ink making it ideal for artists, designers or anyone who enjoys writing or drawing Black, red, blue and green ink colors are part of the Pentel Recycology line and are made of 80% recycled plastic