TWSBI Precision Fountain Pen - Gunmetal

The Precision is TWSBI's metal-bodied piston filler: a brushed aluminum barrel in gunmetal gray, cut into a hexagonal profile so it won't roll off the desk, with an angled clip that gives it a more industrial look than the rest of the line. Rather than a full demonstrator, it has a transparent window in the grip section to show the ink level.

What makes it special

• Machined aluminum body and grip — heavier and more solid than the resin ECO or the acrylic 580 at 30 g
• Hexagonal barrel with an angled clip, a departure from TWSBI's rounded demonstrator shapes
• Ink window in the grip section instead of a clear barrel, for a more discreet look on a desk
• Piston filler holding about 1.0 ml, filled straight from the bottle with no cartridge or converter
• Two o-rings on the piston knob so the cap posts securely rather than sitting loose
  
• Fully user-serviceable; ships with a wrench and silicone grease for disassembly and maintenance

Specs

• Type: Fountain pen, broad nib
• Nib: German-made stainless steel
• Body & grip: Brushed aluminum, gunmetal gray
• Filling: Piston (bottled ink only — no cartridges or converter)
• Ink capacity: ~1.0 ml
• Cap: Screw closure, postable (o-ring secured)
• Capped length: 137 mm (5.4 in)
• Uncapped length: 125 mm (4.9 in)
• Posted length: 167 mm (6.6 in)
• Weight: 30 g total (20 g barrel, 10 g cap)