Sailor TUZU ADJUST Forge Gunmetal Fountain Pen

Sailor TUZU ADJUST Forge Gunmetal Fountain Pen

The Sailor TUZU ADJUST Forge Gunmetal Fountain Pen takes the ergonomic concept behind TUZU into a more refined direction, with a metallic finish that combines subtle shine with a sophisticated matte appearance. It retains the distinctive rotating nib system and Natural Fit Grip while introducing a metal-powder-infused section for greater presence and balance in the hand. Its stainless steel nib is available in F, M and B, and a Sailor converter comes installed inside the pen.

Forge: a more refined interpretation of TUZU

The TUZU ADJUST Forge collection preserves the functional philosophy of TUZU while giving the fountain pen a more sophisticated presence. Sailor applies a vacuum metallization process to the barrel and cap to create a metallic surface that combines a distinctive lustre with an elegantly subdued appearance. Black elements provide contrast against the metallic finish and reinforce the clean, technical character of the design.

Gunmetal: a restrained metallic finish

The Gunmetal version uses a deep metallic tone associated by Sailor with the solid, powerful character of metal. This is not simply coloured resin: the visual effect of the barrel and cap comes from the metallization process applied to their surfaces. The result combines TUZU's contemporary design with a more understated aesthetic, making it particularly appealing to writers who want a modern fountain pen with a metallic appearance without the weight of a fully metal body.

Vacuum metallization

To create the Forge finish, Sailor places aluminium inside a high-vacuum chamber and heats it until it vaporizes. The aluminium vapour is then deposited onto the surface, forming a very thin metallic film. This process gives the resin structure a texture and lustre reminiscent of metal before colour is added to create the different Forge finishes. Sailor also specifies the use of a PFAS-free coating.

ADJUST System: a fountain pen that adapts to your writing

One of the defining features of TUZU ADJUST is its rotating nib system. Instead of requiring you to change the way you naturally hold a fountain pen, the orientation of the nib and grip can be adjusted to better suit your usual writing angle. Adjustment is possible in 10° increments, helping different users — including both right- and left-handed writers — find a position that works naturally with their individual grip.

Natural Fit Grip and metal-powder-infused section

Forge retains the characteristic Natural Fit Grip of TUZU, with two gently sloping surfaces that provide a broad contact area for the fingers. For this version, Sailor introduces a high-density resin section containing a high concentration of metal powder. This adds weight around the grip for a different balance compared with the standard TUZU, while also giving the section a pleasantly cool, metal-like feel in the hand.

Nib and filling system

The Sailor TUZU ADJUST Forge Gunmetal is fitted with a stainless steel nib available in three sizes: Fine (F), Medium (M) and Broad (B). It uses Sailor's proprietary cartridge/converter filling system and is supplied with the converter already installed inside the pen, allowing it to be filled directly from an ink bottle or used with Sailor ink cartridges.

Package contents

• Sailor TUZU ADJUST Forge Gunmetal Fountain Pen.
• Sailor converter installed inside the pen.
• Exclusive TUZU presentation box.
• Manufacturer documentation.

Technical specifications

• Brand: Sailor.
• Series: TUZU ADJUST Forge.
• Colour: Gunmetal.
• Nib: Stainless steel.
• Available nib sizes: F, M and B.
• ADJUST System: Nib rotation in 10° increments.
• Grip: Natural Fit Grip.
• Cap, barrel and grip material: Recycled polycarbonate.
• Cap and barrel finish: Vacuum metallization.
• Metal used for metallization: Aluminium.
• Grip section: Resin containing metal powder.
• Metal parts: Nickel-chrome finish.
• Filling system: Sailor cartridge or converter.
• Converter: Included and installed.
• Dimensions: Ø 17.5 × 135 mm, including the clip.
• Weight: 22.5 g.

What makes TUZU ADJUST Forge different from the standard TUZU?

Forge retains the two essential features of TUZU ADJUST — the rotating nib and Natural Fit Grip — while significantly changing the material experience. Vacuum metallization gives the body its metallic appearance, while the metal-powder-infused section adds weight around the grip. At 22.5 g, Forge therefore feels more substantial in the hand while preserving the ergonomic approach that defines the TUZU concept.

Images are for reference only; minor variations from the actual product may occur.

Frequently Asked Questions

• Is the Sailor TUZU ADJUST Forge Gunmetal made of metal? The cap, barrel and grip are made from recycled polycarbonate. The metallic appearance of the cap and barrel is created through a vacuum metallization process.
• What does the metal-powder-infused section add? Sailor uses a high-density resin containing a high concentration of metal powder to add weight and balance around the grip while also providing a cool, metal-like feel.
• Can the nib position be adjusted? Yes. The ADJUST System allows the orientation of the nib and grip to be changed in 10° increments to better suit each writer's natural grip and writing angle.
• Which nib sizes are available? It is available with a stainless steel Fine (F), Medium (M) or Broad (B) nib.
• Does it use standard international cartridges? No. TUZU uses Sailor's proprietary cartridge and converter system.
• Is a converter included? Yes. Sailor supplies the converter already installed inside the fountain pen.
• How much does it weigh? The pen weighs approximately 22.5 g.

See how to adjust your TUZU in the following video:

History and philosophy of Sailor

Founded in Hiroshima in 1911, Sailor has spent more than a century developing Japanese writing instruments. TUZU grew from a project that began in 2019 with an unusual idea: instead of expecting every writer to hold a fountain pen in the same way, create a pen capable of adapting to different writing habits. After years of development and testing, TUZU was introduced in 2024 and received an Excellence Award in the Functionality category of the Japan Stationery Awards that same year. Forge continues this philosophy with a more elaborate construction and a different material presence while retaining the adjustable system at the heart of TUZU.

“Find your own angle and let every word follow its natural course.”