TWSBI pens made by one of Taiwan's most experience pen maker who started out as a contract manufacturer. The Diamond features a clear demonstrator body with a piston filling mechanism; these attributes combined with its low price make for a very enticing pen. The body is made of a round clear plastic allowing you to see the internal piston mechanism and the feed. Improved grip and end barrel section compared to 540, 580 has increased ink capacity, about 30% more than 530, 580 has improved the smoothness of cap thread turning
This is special edition that features a clear demonstrator body with rainbow-colored iridescent trim and a stainless steel nib accented with rainbow iridescent color. No two are exactly alike.
Please take note that each trims and nib iridescent color is unique and different.
Length with cap close - 14.1cm
Length with cap posted - 17.5cm
Central circumference - 4.2cm
System: Fountain pen uses Piston-filled ink.
Nib type: Steel nib