Writing Accessories - Pen & Tool

Writing Accessories

    Filter

      Shop the small parts that keep your pens performing — ink, nibs, converters, refills, and protective boxes. Genuine accessories built to match your pen's original specifications.

      124 products
      Uni Jetstream SXR-600 G2 ballpoint pen refills displaying 0.38mm, 0.5mm, and 0.7mm tip sizes with black hybrid ink in original Japanese retail packaging.
      Close-up of a single metal Uni Jetstream SXR-600 G2 ballpoint pen refill showing the precision writing tip, engraved branding, and standard black ink end cap.
      Uni Jetstream SXR-600 G2 Ballpoint Pen Refill
      $8.50
      Uni Jetstream SXR-200 D1 Ballpoint Pen Refills, displaying black, red, and blue ink variants in original Japanese retail packaging.
      Uni Jetstream SXR-200 D1 Ballpoint Pen Refills, displaying black, red, and blue ink variants in original Japanese retail packaging.
      Uni Jetstream SXR-200 D1 Ballpoint Pen Refill
      $3.50
      Official Japanese retail packaging for the SEED EH-SR Slendy Plus 2 Eraser Refill, featuring a 2-pack of slim rectangular replacement eraser strips for precision drafting.
      Seed Slendy Plus 2 Eraser Refill
      $3.00
      Collection of uni Smudge-Proof pencil lead refill cases in various sizes and hardness grades.
      uni Smudge-Proof Mechanical Pencil Lead Refill, 0.5mm HB in white case with blue slider.
      Uni Smudge-Proof Mechanical Pencil Lead Refills
      $3.00
      Kaweco Spare Nib 190 Steel Gold Plated - Pen & Tool
      Kaweco Spare Nib 190 Steel Gold Plated
      $15.00
      TOOLS to LIVEBY Brass Lead Holder - Pen & Tool
      TOOLS to LIVEBY Brass Lead Holder - Pen & Tool
      TOOLS to LIVEBY Brass Lead Holder
      $17.00
      Sold Out
      Front-facing studio portrait of the Uni Metal Lead Case Limited Edition Matte Black, showcasing the signature circular thumb-indentation for the slide mechanism and the subtle embossed Uni logo on the high-rigidity metal chassis.
      Official retail packaging for the Uni Metal Lead Case Limited Edition Black, highlighting the 0.5 HB Smudge-Proof lead specifications and the minimalist Mitsubishi Pencil Co., Ltd. Japanese box design.
      Uni Metal Lead Case Limited Edition – Matte Black
      $38.00
      Pilot IC-50 Fountain Pen Ink Cartridges
      Pilot IC-50 Fountain Pen Ink Cartridges
      $3.00
      Sold Out
      Pilot CON-40 Fountain Pen Converter
      Pilot CON-40 Fountain Pen Converter with packaging
      Pilot CON-40 Fountain Pen Converter
      $7.50
      Pilot CON-70N Fountain Pen Converter
      Pilot CON-70N Fountain Pen Converter with packaging
      Pilot CON-70N Fountain Pen Converter
      $9.90
      Staedtler Mars Micro Carbon Mechanical Pencil Lead Refills
      Staedtler Mars Micro Carbon Mechanical Pencil Lead Refills
      Staedtler Mars Micro Carbon Mechanical Pencil Lead Refills
      from $2.50
      Set of colored leads of Pentel Multi 8 Refill Leads (CH2 2.0mm)
      Set of Pentel Multi 8 Refill Leads (CH2 2.0mm) on a white background
      Pentel Multi 8 Refill Leads (CH2 2.0 mm)
      from $2.00
      Pentel Ain Stein C27x Mechanical Pencil Lead Refills. Reinforced silica honeycomb graphite for maximum break resistance. The ideal durable refill for Rotring, Kaweco, and Staedtler drafting pencils.
      Close-up of Pentel Ain Stein twist-lock cap design. Features color-coded accents for instant hardness identification (HB, B, 2B, 4B) and secure storage to prevent spills.
      Pentel Ain Stein Mechanical Pencil Lead Refills
      $3.00
      Pentel Ain C28x Mechanical Pencil Lead Refills in sleek blackout packaging. Premium Japanese high-density graphite designed for Rotring, Kaweco, and Staedtler drafting pencils.
      Full range of Pentel Ain Mechanical Pencil Lead Refills. Available in 0.3mm, 0.5mm, 0.7mm, and 0.9mm sizes with HB, B, 2B, and 4B hardness grades.
      Pentel Ain Mechanical Pencil Lead Refills
      $3.00
      KAWECO MINI CONVERTER FOLDABLE
      KAWECO MINI CONVERTER FOLDABLE
      Kaweco Mini Converter Foldable
      $8.00
      KAWECO INK CARTRIDGES 10 PIECES COLOR MIX
      KAWECO INK CARTRIDGES 10 PIECES COLOR MIX
      Kaweco Ink Cartridges 10 Pieces Color Mix
      $7.00
      KYOTO KYONOOTO INK BOTTLE YURUSHIIRO 40ML
      Kyoto Kyonooto Ink Bottle Yurushiiro 40 ml
      $30.00
      KYOTO KYONOOTO INK BOTTLE MOEGIIRO 40ML
      Kyoto Kyonooto Ink Bottle Moegiiro 40 ml
      $30.00
      KAWECO D1 BALLPOINT PEN REFILL BLUE 0.8MM
      Kaweco D1 Ballpoint Pen Refill Blue 0.8 mm
      $7.90
      KAWECO D1 BALLPOINT PEN REFILL BLACK 0.8MM
      Kaweco D1 Ballpoint Pen Refill Black 0.8 mm
      $7.90
      Sold Out
      KAWECO GIFTBOX FOR LONG PENS
      KAWECO GIFTBOX FOR LONG PENS
      Kaweco Giftbox for Long Pens
      $14.00
      Sold Out
      KAWECO GIFTBOX FOR SHORT PENS
      KAWECO GIFTBOX FOR SHORT PENS
      Kaweco Giftbox for Short Pens
      $14.00
      KAWECO STANDARD CONVERTER MIDNIGHT BLUE
      Kaweco Standard Converter Midnight Blue
      $8.00
      KAWECO PREMIUM SPARE NIB 060 STEEL GOLD PLATED
      KAWECO PREMIUM SPARE NIB 060 STEEL GOLD PLATED
      Kaweco Premium Spare Nib 060 Steel Gold Plated
      $39.00
      KAWECO PREMIUM SPARE NIB 060 STEEL BLANK
      KAWECO PREMIUM SPARE NIB 060 STEEL BLANK
      Kaweco Premium Spare Nib 060 Steel Blank
      $39.00
      Kaweco LILIPUT Nostalgic Clip Silver for Ballpoint Pen
      Kaweco Liliput Nostalgic Clip Silver for Ballpoint Pen
      $6.00
      Kaweco LILIPUT Nostalgic Clip Black for Ballpoint Pen
      Kaweco Liliput Nostalgic Clip Black for Ballpoint Pen
      $6.00
      KAWECO EURO ROLLERBALL PEN REFILL BLACK 0.4MM
      KAWECO EURO ROLLERBALL PEN REFILL BLACK 0.4MM
      Kaweco Euro Rollerball Pen Refill Black 0.5 mm
      $8.00

      The Small Parts That Matter Most

      A great pen is only as good as what goes into it. Our Writing Accessories collection covers the parts and consumables that keep your pens performing at their best — from bottled ink to replacement nibs and refills.

      Inks

      Fountain pen ink comes in a huge range of colors and formulations, each affecting flow, dry time, and how it interacts with different papers. Bottled ink also unlocks piston-fill and converter pens, letting you switch colors freely instead of relying on fixed cartridges. Browse our inks.

      Nibs

      A nib defines how a fountain pen writes — its width, flexibility, and material all shape the final line on the page. Replacing or upgrading a nib can transform an existing pen without buying a new one entirely. Shop our nibs.

      Converters

      A converter lets a cartridge-based fountain pen draw ink from any bottle instead of being limited to pre-filled cartridges — opening up access to hundreds of ink colors and formulations. Browse our converters.

      Refills

      Cartridges and refills sized to fit your specific pen, keeping fountain pens, rollerballs, and ballpoints topped up and ready to write. Shop refills.

      Boxes

      Protective boxes and cases designed to store and display pens when they're not in use — keeping nibs protected and collections organized. Browse our boxes.

      Clips

      Replacement and upgrade clips for select pen models, offering a way to refresh or repair a pen's hardware without replacing the whole piece. Shop clips.

      Why Shop Writing Accessories at Pen & Tool

      We stock genuine parts and accessories matched to the pens we sell, so your writing instruments keep performing the way they were designed to — for years, not just the first fill.