The TWSBI ink cartridges hold more ink than traditional ones, allowing you to write longer on a single cartridge.

The cartridges have a standard international fitting, but please keep in mind that they may not fit every fountain pen as they are slightly conical (flared out) and have a thicker rim than conventional cartridges. 

Naturally, they fit the TWSBI Swipe fountain pens perfectly.

The packet contains 10 x 1.4ml ink cartridges, shipped in a hard plastic case.

With a history of more than 40 years of manufacturing, including producing high-end pens for other brands, Ta Shin Precision decided to start selling under their own brand, TWSBI. The name TWSBI is made up of TWS and BI. ‘TWS’ is the reversed initials of the phrase ‘San Wen Tong’, translated Hall of Three Cultures, and ‘BI’ literally means writing instrument.