This tip fits the FX-888 analog and digital irons, and they're fast to swap, takes only 30 seconds to change out. All the tips are good for either lead or lead free (simply set the iron to the temperature required for the solder you are using).

This is a "Hoof" tip, great for drag soldering and also has more mass at the end for quickly heating up large solder joints such as connectors.

Credits to the owners of the description and pictures.