What does the Torque Filler mean?

An all-new way to experience a Luxury of a Piston Filler, with the convenience of a Converter. fountain pen in a familiar form.

Fitted with a captive converter, this pen enables you to fill ink in a beautiful new way without unscrewing the bottom barrel; while still maintaining the cleaning ease of a traditional converter.

The bottom barrel can still be disassembled to clean if necessary.