The set includes 5 calligraphic nibs in different sizes (0,70mm, 1.00mm, 1.50mm,
2.00mm, 2.50mm), so that one can write special invitations in Gothic style
letters. The converter replaces the fountain pen cartridges, and can be inserted
in the rear part of the ferrule, with a slight pressure. Before sucking up the ink
make sure the converter is secure. Turn the black plastic part clockwise, bring
down the plunger at the bottom of the converter. Then, insert the tip of the pen
into the ink bottle, and turn the black plastic part clockwise to fill the converter,
remove the tip from the bottle and dry with paper towels.