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TWSBI Diamond 580 RB Fountain Pen
TWSBI Diamond 580 RB Fountain Pen
All about nib sizes
Special version of the TWSBI Diamond 580 with red cap featuring the star of Taiwan and blue piston knob.
Length capped = 142mm
Nib length = 18.2mm
Section length = 21mm
Section diameter (max/min) = 10.0/9.3mm
Barrel diameter (max) = 13.1mm
Total length (not posted, including nib) = 129mm
Total length posted (including nib) = 175mm
Weight = 29g
Filling mechanism: piston