Change the feel of your Kakimori Frost Fountain Pen with the quick-swap Frost Fountain Pen Replacement Nib.Whether you're replacing a much-loved nib or expanding the possibilities of your pen, the Frost Fountain Pen Replacement Nib is easy to switch out so you can find new ways to love your pen.The and Fountain Pen nibs are compatible with any of Kakimori's Frost Pens, allowing you to switch pen styles neatly to suit your changing needs.