Mont Blanc RollerBall Pen Recarga BLUe M401 M506 M710 P163 H-12 105159 107878 Med
Not compatible with Montblanc ballpoint pen. There may be a wax covering on the tip to prevent drying out of the ink. If there's still wax stuck on the nib, alcohol or vinegar soaked cotton ball or napkin may be used to remove it.