A single mini rollerball refill by Montegrappa. Designed to fit the Micra collection, this refill features a standard-sized nib and black ink. The rolling ball and fluid ink produce smooth writing. This black rollerball refill has been designed for the Micra collection. The mini refill is small in size and features a standard-sized nib. This refill also fits the special edition Jaguar XF pen. The black ink inside is fluid and quick-drying making this the perfect addition to your Micra rollerball.