The Lamy extra fine stainless steel nib is an excellent spare or replacement
nib. I removed the fine nib on one of my Lamy Studio fountain pens, which was
inked, and replaced it with this extra fine nib. The nib wrote perfectly,
within seconds of the being slid onto the feed, and I prefer the narrower extra
fine line width for drawing and note taking, Right from the package, no nib
adjustment was necessary since the nib tines were perfectly aligned and the
space between tines was correct for good ink flow. Thank you JetPens!