On counterfeits original Montblanc refills usually do not fit, since the holder does not match the original dimensions. In the forum it is recommended to try various standard refills in a stationery shop to find a fitting alternative. Collectors point out that knowingly buying, selling and partly even possessing brand counterfeits can be legally problematic. As a long-term more sensible solution, replacing the fake with an original writing instrument is regarded; repair or nib work on counterfeits is not carried out by Montblanc.