Perfectly horizontal profile of the capped TWSBI Diamond 580ALR Black fountain pen on a seamless white background, featuring the clear faceted barrel, matte black aluminum piston knob and cap band, and contrasting polished silver pocket clip.

TWSBI Diamond 580ALR Piston Filler Fountain Pen - Black

EF
$51.12
$51.12 $72.00
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Perfectly horizontal profile of the capped TWSBI Diamond 580ALR Black fountain pen on a seamless white background, featuring the clear faceted barrel, matte black aluminum piston knob and cap band, and contrasting polished silver pocket clip.
  • Perfectly horizontal profile of the capped TWSBI Diamond 580ALR Black fountain pen on a seamless white background, featuring the clear faceted barrel, matte black aluminum piston knob and cap band, and contrasting polished silver pocket clip.
  • Top-down view of the uncapped TWSBI Diamond 580ALR Black fountain pen and its clear cap resting on a white curved display stand, detailing the internal piston mechanism and matte black cap band.
  • Angled view of the fully capped TWSBI Diamond 580ALR Black fountain pen on a white background, showing the clear faceted demonstrator barrel, matte black anodized aluminum trim, and polished silver clip.
  • Uncapped TWSBI Diamond 580ALR Black fountain pen angled on a white background, highlighting the silver stainless steel Jowo nib, matte black ribbed aluminum grip, and clear high-capacity ink barrel.
  • Dark and moody flat lay of the TWSBI Diamond 580ALR Black fountain pen next to its cap, arranged with dried botanicals and branches, emphasizing the stealthy matte black aluminum trim and clear faceted barrel.
  • Uncapped TWSBI Diamond 580ALR Black fountain pen and cap resting on a textured grey woven fabric, showcasing the industrial contrast between the clear demonstrator resin, silver nib, and matte black ribbed aluminum accents.
  • Perfectly horizontal profile of the capped TWSBI Diamond 580ALR Black fountain pen on a seamless white background, featuring the clear faceted barrel, matte black aluminum piston knob and cap band, and contrasting polished silver pocket clip.
  • Top-down view of the uncapped TWSBI Diamond 580ALR Black fountain pen and its clear cap resting on a white curved display stand, detailing the internal piston mechanism and matte black cap band.
  • Angled view of the fully capped TWSBI Diamond 580ALR Black fountain pen on a white background, showing the clear faceted demonstrator barrel, matte black anodized aluminum trim, and polished silver clip.
  • Uncapped TWSBI Diamond 580ALR Black fountain pen angled on a white background, highlighting the silver stainless steel Jowo nib, matte black ribbed aluminum grip, and clear high-capacity ink barrel.
  • Dark and moody flat lay of the TWSBI Diamond 580ALR Black fountain pen next to its cap, arranged with dried botanicals and branches, emphasizing the stealthy matte black aluminum trim and clear faceted barrel.
  • Uncapped TWSBI Diamond 580ALR Black fountain pen and cap resting on a textured grey woven fabric, showcasing the industrial contrast between the clear demonstrator resin, silver nib, and matte black ribbed aluminum accents.
TWSBI Diamond 580ALR Piston Filler Fountain Pen - Black

TWSBI Diamond 580ALR Piston Filler Fountain Pen - Black

$51.12
$51.12 $72.00
Nib Size
  • Edition: Black — Matte black anodized aluminum finish for a sleek, stealthy, and highly professional aesthetic
  • Grip Section: "ALR" Ribbed Aluminum — Textured matte grip for superior control and comfort
  • Filling Mechanism: Piston Filler — Internal piston draws ink directly into the barrel (approx. 1.9ml capacity)
  • Nib: Stainless Steel — Precision Jowo nib (Silver finish) for smooth writing
  • Body: Diamond Faceted — Crystal clear resin barrel catches the light and shows off the ink
  • Maintenance: Fully Serviceable — Includes wrench and silicone grease for home disassembly
  • Dimensions: 142 mm capped, 27g weight — Perfectly balanced design featuring lightweight machined aluminum internals
  • Origin: Made in Taiwan — Precision engineered for durability

About the TWSBI Diamond 580ALR Piston Filler Fountain Pen - Black

The TWSBI Diamond 580ALR Piston Filler Fountain Pen - Black takes the classic Diamond 580 design and upgrades it with premium materials for the serious writer. While retaining the famous diamond-faceted barrel, this "ALR" version replaces standard plastic components with durable machined aluminum finished in a sleek, understated matte black.

The standout feature of this model is the ribbed aluminum grip section. Unlike smooth plastic pens that can become slippery during long writing sessions, the matte textured finish provides a secure, tactile hold for superior control. The stealthy matte black aluminum piston mechanism and cap accents give the pen a highly cohesive, modern elegance that looks right at home in any professional setting.

Ideally suited for bottled ink enthusiasts, it features a high-capacity piston filling mechanism that holds approximately 1.9ml of ink—nearly 3x the capacity of a standard converter. The clear body lets you see your ink level at a glance, turning the liquid inside into a visual part of the pen's design.

True to TWSBI’s philosophy, the pen arrives in a presentation box with a wrench and silicone grease, giving you the freedom to disassemble and maintain your tool for years of reliable use.

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