No, in the LeGrand rollerball no fineliner refills fit, since this requires a larger and thicker refill, which is not offered by Schmidt Feintechnik in this form. The standard fineliner refills only fit the smaller rollerballs like Classique, Bohème, StarWalker and Scenium as well as many identically constructed competing models, since Schmidt also makes these refills for Faber-Castell. Pelikan rollerball refills are made in Asia and have a somewhat slimmer tip, which is why they fit neither the LeGrand nor other Montblanc rollerballs.