Piston

    Filter
      TWSBI Diamond 580 ALR (Prussian Blue) - Extra Fine Fountain Pen
      Diamond 580 ALR (Prussian Blue) - Extra Fine
      TWSBI
      $129.00
      TWSBI Diamond 580 ALR (Prussian Blue) - Fine fountain pen, featuring an uncapped clear barrel showing a steel nib and piston-filling mechanism, alongside a capped version.
      Diamond 580 ALR (Prussian Blue) - Fine
      TWSBI
      $129.00
      TWSBI Diamond 580 ALR (Prussian Blue) - Medium Fountain Pen
      Diamond 580 ALR (Prussian Blue) - Medium
      TWSBI
      $129.00
      Diamond 580 ALR (Prussian Blue) - Stub 1.1 fountain pen with transparent barrel and cap, blue metal trim, steel nib, and piston-filling mechanism.
      Diamond 580 ALR (Prussian Blue) - Stub 1.1
      TWSBI
      $129.00
      TWSBI Diamond 580 ALR (Punch Pink) - Broad Fountain Pen
      TWSBI Diamond 580 ALR (Punch Pink) - Broad Fountain Pen
      Diamond 580 ALR (Punch Pink) - Broad
      TWSBI
      $129.00
      Sold Out
      TWSBI Diamond 580 ALR (Punch Pink) - Extra Fine Fountain Pen
      TWSBI Diamond 580 ALR (Punch Pink) - Extra Fine Fountain Pen
      Diamond 580 ALR (Punch Pink) - Extra Fine
      TWSBI
      $120.00
      Sold Out
      TWSBI Diamond 580 ALR (Punch Pink) - Fine Fountain Pen
      TWSBI Diamond 580 ALR (Punch Pink) - Fine Fountain Pen
      Diamond 580 ALR (Punch Pink) - Fine
      TWSBI
      $120.00
      TWSBI Diamond 580 ALR (Punch Pink) - Medium Fountain Pen
      TWSBI Diamond 580 ALR (Punch Pink) - Medium Fountain Pen
      Diamond 580 ALR (Punch Pink) - Medium
      TWSBI
      $129.00
      TWSBI Diamond 580 ALR (Punch Pink) - Stub 1.1 Fountain Pen
      TWSBI Diamond 580 ALR (Punch Pink) - Stub 1.1 Fountain Pen
      Diamond 580 ALR (Punch Pink) - Stub 1.1
      TWSBI
      $129.00
      Sold Out
      TWSBI Diamond 580 ALR (Purple) - Broad Fountain Pen
      Diamond 580 ALR (Purple) - Broad
      TWSBI
      $98.18
      Sold Out
      TWSBI Diamond 580 ALR (Purple) - Extra Fine Fountain Pen
      Diamond 580 ALR (Purple) - Extra Fine
      TWSBI
      $98.18
      Sold Out
      Diamond 580 ALR (Purple) - Fine features a transparent body, lavender-purple accents, and visible ink reservoir. One pen is capped; the other uncapped, showcasing the nib.
      Diamond 580 ALR (Purple) - Fine
      TWSBI
      $98.18
      Sold Out
      Diamond 580 ALR (Purple) - Medium fountain pen with clear barrel, lavender-purple trim, piston-filling mechanism; shown capped and uncapped displaying the medium-sized nib.
      Diamond 580 ALR (Purple) - Medium
      TWSBI
      $98.18
      Sold Out
      TWSBI Diamond 580 ALR (Purple) - Stub 1.1 Fountain Pen
      Diamond 580 ALR (Purple) - Stub 1.1
      TWSBI
      $104.55
      TWSBI Diamond 580 ALR (Sunset Yellow) - Broad Fountain Pen
      Diamond 580 ALR (Sunset Yellow) - Broad
      TWSBI
      $129.00
      Sold Out
      TWSBI Diamond 580 ALR (Sunset Yellow) - Extra Fine Fountain Pen
      Diamond 580 ALR (Sunset Yellow) - Extra Fine
      TWSBI
      $120.00
      Sold Out
      TWSBI Diamond 580 ALR (Sunset Yellow) - Fine Fountain Pen
      Diamond 580 ALR (Sunset Yellow) - Fine
      TWSBI
      $129.00
      Sold Out
      TWSBI Diamond 580 ALR (Sunset Yellow) - Medium Fountain Pen
      Diamond 580 ALR (Sunset Yellow) - Medium
      TWSBI
      $120.00
      Sold Out
      TWSBI Diamond 580 ALR (Sunset Yellow) - Stub 1.1 Fountain Pen
      Diamond 580 ALR (Sunset Yellow) - Stub 1.1
      TWSBI
      $129.00
      Sold Out
      TWSBI Diamond 580AL (Emerald Green) - Broad Fountain Pen
      Diamond 580AL (Emerald Green) - Broad
      TWSBI
      $98.18
      Sold Out
      TWSBI Diamond 580AL (Emerald Green) - Extra Fine Fountain Pen
      Diamond 580AL (Emerald Green) - Extra Fine
      TWSBI
      $98.18
      Sold Out
      Diamond 580AL (Emerald Green) - Fine fountain pen features a transparent body, green metal trim, steel nib, and piston-fill mechanism, shown capped and uncapped.
      Diamond 580AL (Emerald Green) - Fine
      TWSBI
      $98.18
      Sold Out
      TWSBI Diamond 580AL (Emerald Green) - Medium Fountain Pen
      Diamond 580AL (Emerald Green) - Medium
      TWSBI
      $98.18
      Sold Out
      TWSBI Diamond 580AL (Emerald Green) - Stub 1.1 Fountain Pen
      Diamond 580AL (Emerald Green) - Stub 1.1
      TWSBI
      $104.55
      Sold Out
      Diamond 580AL (Rose Red) - Broad fountain pen with clear barrel, red metal accents, stainless-steel nib, and visible piston-filling mechanism, shown capped and uncapped.
      Diamond 580AL (Rose Red) - Broad
      TWSBI
      $98.18
      Sold Out
      Diamond 580AL (Rose Red) - Extra Fine fountain pen with a clear barrel, red-anodized trim, visible piston mechanism, steel nib, shown capped and uncapped.
      Diamond 580AL (Rose Red) - Extra Fine
      TWSBI
      $98.18
      Sold Out
      Diamond 580AL (Rose Red) - Fine fountain pen with transparent body, red metal trim, visible nib, and piston mechanism, shown capped and uncapped.
      Diamond 580AL (Rose Red) - Fine
      TWSBI
      $109.09
      Sold Out
      Diamond 580AL (Rose Red) - Medium demonstrator fountain pens, clear barrels reveal piston mechanism; red-metal accents, polished metal caps, steel nibs.
      Diamond 580AL (Rose Red) - Medium
      TWSBI
      $98.18
      Sold Out
      Diamond 580AL (Rose Red) - Stub 1.1 fountain pen, clear barrel, red grip, visible piston mechanism, shown capped and uncapped revealing the nib. Limited edition.
      Diamond 580AL (Rose Red) -Stub 1.1
      TWSBI
      $120.00
      Diamond 580AL (Silver) - Broad fountain pen, showcasing a clear barrel with visible piston mechanism, silver grip, and a detached clear/silver cap.
      Diamond 580AL (Silver) - Broad fountain pen showcasing a clear demonstrator design with a cap, visible piston-fill mechanism, and silver trimmings.
      Diamond 580AL (Silver) - Broad
      TWSBI
      $129.00
      Diamond 580AL (Silver) - Extra Fine fountain pen with clear body, visible piston-filling mechanism, metal nib, and cap featuring a metal clip and red emblem.
      Diamond 580AL (Silver) - Extra Fine fountain pen, transparent body with silver trim, showcasing piston-filling mechanism and detachable components, clear cap posted on back.
      Diamond 580AL (Silver) - Extra Fine
      TWSBI
      $129.00
      Diamond 580AL (Silver) - Fine fountain pen with a clear body, visible piston-filling mechanism, and metal nib, featuring a detachable cap with a red silicone seal.
      Diamond 580AL (Silver) - Fine fountain pen with clear body, silver trim, visible piston-filling mechanism, and aluminum components; nib section exposed under the cap.
      Diamond 580AL (Silver) - Fine
      TWSBI
      $129.00
      Diamond 580AL (Silver) - Medium fountain pen, uncapped, showcasing transparent barrel, steel nib, piston mechanism, and silver trim, with a clear cap featuring a metal clip.
      Diamond 580AL (Silver) - Medium fountain pen with a clear demonstrator-style body, chrome accents, and visible piston-fill mechanism, featuring an aluminum grip and detachable parts.
      Diamond 580AL (Silver) - Medium
      TWSBI
      $129.00
      Diamond Mini (Clear) - Broad fountain pens, featuring a transparent body and silver trim; one capped, the other uncapped to show the stainless-steel nib.
      Diamond Mini (Clear) - Broad: Transparent fountain pen by TWSBI, showcasing a piston filler mechanism, metal nib, and compact design for portability.
      Diamond Mini (Clear) - Broad
      TWSBI
      $92.00
      Diamond Mini (Clear) - Extra Fine fountain pen, with a transparent body showing the piston-filling mechanism. One pen is capped, the other reveals the metal nib.
      Diamond Mini (Clear) - Extra Fine fountain pen with a transparent barrel and cap, showcasing a piston-style ink reservoir and metal nib, ideal for portability.
      Diamond Mini (Clear) - Extra Fine
      TWSBI
      $92.00
      Diamond Mini (Clear) - Fine fountain pen, featuring a transparent body with silver trim. One pen capped, the other uncapped, showcasing the steel nib and piston mechanism.
      Diamond Mini (Clear) - Fine fountain pen with a visible piston mechanism, metal nib, and screw-on cap, showcasing a compact, demonstrator design by TWSBI.
      Diamond Mini (Clear) - Fine
      TWSBI
      $92.00
      Diamond Mini (Clear) - Medium fountain pens showing piston-filling mechanisms. One capped, one uncapped revealing stainless-steel nib, with transparent barrels and silver-colored trim.
      Diamond Mini (Clear) - Medium fountain pen displaying a transparent barrel, visible piston-filling mechanism, and metal nib, showcasing TWSBI's compact and modern design.
      Diamond Mini (Clear) - Medium
      TWSBI
      $92.00
      Diamond Mini (Clear) - Stub 1.1 fountain pens, one capped and one uncapped, showcasing internal piston-fill mechanisms and steel nibs, ideal for on-the-go use.
      Diamond Mini (Clear) - Stub 1.1 fountain pen, featuring a transparent body with piston filling mechanism and metal nib, displayed on a simple white background.
      Diamond Mini (Clear) - Stub 1.1
      TWSBI
      $98.00
      Sold Out
      Diamond Mini (Clear) - Stub 1.5 fountain pen showcasing a transparent body, visible piston-fill mechanism, with one pen capped and the other displaying its steel nib.
      Diamond Mini (Clear) - Stub 1.5 fountain pen with transparent body, exposing piston-filling mechanism, metal nib, and black feed, perfect for on-the-go use.
      Diamond Mini (Clear) - Stub 1.5
      TWSBI
      $89.09
      Sold Out
      Diamond Mini AL (Gold) - Broad, a clear demonstrator-style fountain pen with a piston-filling mechanism, transparent cap engraved TWSBI, and anodized gold-colored section.
      Diamond Mini AL (Gold) - Broad
      TWSBI
      $99.09