TWSBI Precision Fountain Pen - Gunmetal

Precision engineering for industrial clarity

The TWSBI Precision Fountain Pen is a fully metal, hexagonal bodied writing instrument that feels closer to a precision drafting tool than a traditional pen. Its machined profile is exact and deliberate, delivering a sense of industrial confidence the moment it’s picked up. The muted Gunmetal finish adds depth, control, and quiet authority.

Built on TWSBI’s proven piston filling system and sharing the same reliable nib as the Diamond 580, it pairs technical performance with a purposeful aesthetic.

What sets it apart

• Machined aluminium body for a solid, engineered feel
  
• Clean hexagonal design prevents rolling and enhances grip
• Shares reliable stainless steel nib of the 580
• Substantial feel in the hand without becoming overly heavy

Feel in the hand

The Precision series leans into clean lines and functional design. There's no visual noise make it feel less about personality and more about work instrument.

Who it’s for

• Designers, architects, and technical thinkers
• Writers who enjoy metal-bodied pens
• Journalers wanting a clean, minimalist aesthetic
• Users seeking a dependable everyday fountain pen
• Professionals wanting a piston filler, but not a demosntrator

Not for

• Users wanting a lightweight resin pen
• Writers who prefer decorative or ornate styling
• Those wanting a demonstrator fountain pen
  

Practical tips

• Most popular nib size for Precision is Fine. Writes a 0.4mm line which works well for Western scripts and use in business.

FAQs

Is the Precision heavier than a TWSBI Diamond 580?
Yes. The machined metal body gives it a more substantial and grounded feel in the hand.

Is this pen suitable for everyday use?
Yes, the durable aluminium construction and dependable nib make it an excellent daily writer.

Does the hexagonal shape feel uncomfortable?
No. The facets are subtle and help create grip stability without sharp edges.

Is the nib interchangeable?
Yes. TWSBI nib units can generally be swapped or serviced depending on model compatibility.

What’s included

• TWSBI Precision Fountain Pen Gunmetal 
• Wrench
• Silicone grease
  
• Presentation box
• Instruction leaflet
• Free nib tuning from LarryPOST

Build your practice

• Use with the TWSBI Diamond Ink Well for cleaner filling
• Swap out the bare nib from a Diamond 580 nib unit to explore line width
• De Atramentis Document inks for permanence

Ink pairing suggestions

• Blue-black inks for professional writing
• Graphite and grey inks for monochrome setups
• Deep teal inks for subtle contrast
  

Specifications

• Brand: TWSBI
• Brand series: Precision
• Launch: April 2018
• Origin: Taiwan
• Nib: Stainless steel
• Nib sizes: EF, F, M, B, 1.1 stubs
• Body: Machined aluminium
• Trim: Gunmetal anodised finish
• Cap: Twist
• Grip: approx. 10mm
• Diametre: approx. 13mm
• Length: approx. 140mm (capped)
• Weight: approx. 34g (capped)
• Comparable size: Lamy Studio, Faber-Castell e-motion

The Gunmetal finish introduces a refined, neutral aesthetic that pairs with any writing style.