TWSBI Diamond 580 Clear Fountain Pen

TWSBI Diamond 580 Clear Fountain Pen

The original Diamond 580 demonstrator, in fully clear plastic — a great way to see exactly how TWSBI's piston mechanism works while you write, and a favourite starting point for anyone new to the brand.

Key Features

• Fully clear plastic barrel and cap for a true demonstrator experience
• Stainless steel nib, available in Extra Fine, Fine, Medium, Broad, and Stub 1.1mm
• Screw-type cap mechanism for a secure, no-drip carry
• Fully detachable parts for easy cleaning and maintenance

Filling System

Unscrew the blind cap, dip the nib into your bottled ink, and turn the piston knob to fill directly from the bottle. No cartridges or converters needed.

Specifications