TWSBI Diamond 580 RBT

The TWSBI Diamond 580 RBT is a distinctive special edition of TWSBI's flagship Diamond 580 series. The "RBT" designation refers to its red, blue, and transparent color scheme, inspired by the colors of Taiwan's national flag. Building upon the earlier Diamond 580 RB, the RBT version replaces the original finial design with TWSBI's signature logo while retaining the series' renowned piston-filling mechanism, faceted demonstrator body, and user-serviceable construction.

The TWSBI Diamond 580 RBT features a transparent faceted demonstrator barrel complemented by a red cap, blue piston knob, and matching blue grip section, creating one of the brand's most recognizable colorways. Equipped with a polished stainless steel nib and a high-capacity piston-filling system capable of holding approximately 2 ml of ink, it combines dependable everyday performance with a design that pays tribute to TWSBI's Taiwanese heritage.

We have for sale a brand-new TWSBI Diamond 580 RBT, available in different nib sizes. It comes complete with its box, papers, and other accessories.