As anyone who loves their Leonardo Officina fountain pen knows, their nibs are smooth and provide a bit of bounce for a writing experience unlike any other. With a replacement nib, you can swap out a nib that took an unexpected tumble, meeting tip-first with the floor. Leonardo replacement nibs are #6 size, which fit a large selection of fountain pens on the market. They are available in a full range of tip sizes from extra fine through broad. You could also some calligraphic flair with the stub nib option.