The TWSBI Diamond 580 RGT II is a fountain pen with piston filling system. The TWSBI Diamond 580 is made of polycarbonate, with rose goldplated details. The cap is smooth while the barrel is faceted. The TWSBI Diamond 580 RGT II fountain pen has clear barrel that shows the mechanism very well. The clear body gives the TWSBI also a different look witht he ink it is filled with. The TWSBI logo finish the top of the cap.
The TWSBI Diamond 580 Fountain pen has a polished stainless steel nib engraved with the TWSBI logo, available in several sizes.
TWSBI fountain pens can be entirely disassembled for the purposes of cleaning and servicing. Instructions and necessary tools are supplied with each TWSBI fountain pen. Please note that the disassembly feature is only there for experienced users and is not necessary for normal use. Disassembly is at your own risk!
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 from 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.