Spectrum NoirRefill ink for your pen. Now you never need to repurchase a pen because it ran out of ink. With this refill, your pen will last for years and years. Simply remove the chisel nib and use the handy dropper cap to fill the barrel with fresh, vibrant ink. Replace the nib and you're ready to color your world! Handy plastic refill bottle from is filled with 25 ml of inkenough to refill your pen at least 5 times! What a terrific value!