Anderson Pens own German-made #6 single-tone gold plated steel 1.5mm Stub fountain pen replacement nib by JoWo can be used with any pen that has a #6 sized nib, including, but not limited to many Monteverde, Conklin, and Noodler's pens, as well as most others that accept standard modern #6 nibs. This 1.5mm Stub nib will add flair to your writing with thin cross strokes and wider downstrokes.