Lanier Combo Pack - 4 Pack of Schmidt P8126 Short Version 3.88" in lenght with Black Ink and .6mm Fine Nib Capless Rollerball Refill. Schmidt Capless System is developed for the most smooth end elegant writing. The Schmidt Capless System refills are available in three different lengths. Double check to make sure your pen requires the "P" or Short version which is 3.88" before purchasing this item.