TWSBI Diamond 580 Nib Set

If variety is the spice of writing, the TWSBI Diamond 580 Nib Set is a very civilised spice rack indeed. Designed for quick, uncomplicated nib changes, this spare nib set allows you to adapt your Diamond 580 to suit your handwriting, your ink, or simply your mood—without tools, fuss, or raised blood pressure.

Each set includes a polished stainless steel nib engraved with the TWSBI logo, paired with a clear Diamond 580 grip section complete with its metal ring. Everything arrives neatly housed in an easy holder case, keeping unused nibs safe and well behaved when not in service. It’s a thoughtfully complete solution rather than just a loose nib rattling about in a drawer.

As a bonus for the practically minded, this nib unit is also compatible with the Diamond 540—simply swap out the grip section and carry on writing as if nothing ever changed.

Why You’ll Love It

• Change Nibs in Moments: Quick, simple swaps let you tailor your writing without interrupting your flow.

• One Unit, Fully Sorted: Nib and clear grip section included—no extra parts, no guesswork.

• Wide Choice of Expression: From neat notes to bold flourishes, there’s a nib here for every occasion.

Nib Options:

• EF (Extra Fine): For small handwriting and precise detail

• F (Fine): The most popular everyday choice—balanced and tidy

• M (Medium): Slightly broader, relaxed, and easy-going

• B (Broad): For confident statements, headers, and rich shading

• Stub 1.1mm: Italic-style line variation, perfect for decorative writing

• Stub 1.5mm: Even bolder flair for titles and expressive lettering

Details

• Dimension: ‎68mm x 12mm x 10mm
  
• Item Weight: 28g
  
• Material: ‎Alloy Steel, Plastic
  
• Country of Origin: Taiwan