TWSBI Diamond 580 Fountain Pen RB - Red and Blue. Transparent barrel reveals the filling mechanism, a built-in piston-filler with a very smooth action. Chromed metal trim and pocket clip. Translucent red cap, and translucent blue piston knob, with the white sun emblem of Taiwan on the end of the cap in place of the usual TWSBI logo. Rubber o-ring on cap thread ensures an airtight seal to prevent ink drying out in the pen, whilst also ensuring that the cap is firmly attached to the pen when not in use.
Diamond-faceted barrel ensures pen will not roll away if left uncapped on a desk.
Polished steel nib engraved with TWSBI logo and branding, available in a wide range of nib sizes: fine, medium, broad, extra-fine, and stub 1.1mm (stub nib costs slightly more).
141mm long closed, 130mm long open, 176mm long posted. 12.9mm max barrel diameter, grip section tapers down to 9.5mm. Weighs 28g.
Note: piston-filler pens cannot use cartridges.
Like all TWSBI fountain pens we stock, this pen can be entirely disassembled for the purposes of cleaning and servicing. Instructions and necessary tools are supplied with each pen. However, the disassembly feature is only there for experienced users and is not necessary for normal use. Disassembly is at your own risk!