Hold the upper part of the barrel in one hand and the lower part with the other, then twist the barrel to unscrew it from the lower front section.

The Cross Selectip gel rollerball refills are smooth writing gel ink refills with a medium tip. Its gel ink is of archival quality and is available in four ink colors. Nearly all Cross manufactured products have codes that start with an 8, and nearly all Sheaffer manufactured products have codes that start with a 9.If you are looking for an alternative refill to use instead of the Cross Classic ballpoint pen refills, then there are a couple of options,

It appears that some Cross refills are rebranded as Sheaffer and not the other way round; as in the Sheaffer catalogs, the product codes start with an 8 and are appended SH. If your favourite pen has run out of ink, it's time for a pen refill. With less waste, it's a more eco-friendly and cost-effective solution to replacing your pen completely. Monteverde refills use “Soft Roll Ink Technology,” a very low viscosity ink sometimes known as hybrid ink. This type of ink is very smooth flowing and glides more easily across the paper than traditional ballpoint pen inks. At the time of writing this, Cross makes three different Selectip refills, a gel rollerball, jumbo ballpoint, and a porous point fineliner. The converter is a piston fill converter; to use it, simply dip the nib into the bottle of ink and then turn the screw at the end, drawing the ink into the converter’s reservoir. The Cross Push in Style Ink Converter fits the Following Fountain Pens:The Cross Switch it pencil converter is a neat little gadget that can turn a Cross ballpoint pen fitted with a Cross Classic refill into a mechanical pencil.