TWSBI Diamond 580ALR Fountain Pen in a gorgeous limited edition Prussian Blue. Transparent barrel reveals the blue anodized aluminium filling mechanism, a built-in piston-filler with a very smooth action. Chromed metal trim and pocket clip. TWSBI logo nicely finishes the top of the pen's cap. 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.

Along with the blue anodized aluminium filling mechanism, this ALR version features an aluminium grip section to help better balance the pen.

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.

141mm long closed, 130mm long open, 176mm long posted. 12.9mm max barrel diameter, grip section tapers down to 9.5mm. Weighs 32g - just a little heavier than the standard model Diamond 580.

Note: piston-filler pens cannot use cartridges.

Supplied gift-boxed.

There are some white marks on the pistons of these pens; this is grease to ensure that the piston action is smooth and reliable.

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!