Principal adaptor

Use this adaptor so you can draw with a Principal nib using our Pump Pen or Fountain Pen. 

Adaptors let you adapt your Pump Pen or Fountain Pen for use with a different type of nib.

The Principal nib is made by Leonardt, and simulates the performance and behavior of the Principality nib, which was very popular 100 years ago. The Hunt 101 is another example of an attempt to emulate the Principality nib. 

You can remove the nib to replace or clean it. Just pull out the old nib and insert the new nib. 

You can order five Principal nibs if you are out of stock. 

If you want to order this adaptor for an earlier model pen, please send a message to

Two choices of size

Be sure to order the right size for your Gen 10 pen. You have two choices: adaptors for pens with overfeeds/inserts and without. Select Yes below if your pen has an overfeed or insert, otherwise, No is the default selection. 

For more information . . .