Made to order and machined completely in-house by our small shop — please allow 1-2 weeks lead time before your order ships.

Introducing stainless damascus; a more reserved exotic. Monochromatic with a deep etching to bring out the layers. Subtle, but just as special. Composed of 304 and 316 stainless steels twisted and forged together.

The Bolt Action Pen v.03 represents the culmination of everything INVENTERY has refined since bringing our entire production in-house. Where v.01 established the platform and v.02 perfected it, v.03 reimagines the Bolt Action Pen from the ground up — the most versatile and precise iteration to date.

At its core is an adjustable set screw: a quiet but defining feature that unlocks true refill versatility. With a single internal adjustment, the v.03 accommodates virtually any refill on the market — from Parker-style to Pentel Energel and everything in between — each dialed to its ideal length without swapping a single component. Paired with nose tips reamed to size (2.4mm / 2.5mm / 2.6mm), the v.03 eliminates the tip wiggle long associated with multi-refill pens. Engineered around the Energel for optimal length, yet genuinely refill-agnostic.

Completing the design is a single-piece barrel for cleaner lines and greater rigidity. Understated features, deliberately executed — the details you don't notice at first are the ones that change how the pen writes. In our eyes, the ultimate Bolt Action Pen in its final form.

Available in 303 stainless steel, C693 brass, C145 copper, and 6Al-4v grade 5 titanium, 702 Zirconium.

Confirmed compatible refills:

- Pentel Energel (2.4mm)

- Parker/ISO G2 standard (2.5mm)

- Pilot Juice Up (2.5mm)

- Uni Signo UMR-38 (2.4mm)

- Zebra JLV 0.5 (2.4mm)

- Schneider Topball 850 (2.5mm)

- Schmidt P8126 (2.6mm)

- Monteverde P42 (2.5mm)

- Parker-style standards

How it’s made: Stainless Damascus is forge-welded from 304 and 316 stainless steels, twisted and layered under heat and pressure into a single billet. Each barrel is machined from that billet, then deep-etched to draw out the monochromatic light-and-dark layering. Because the pattern runs all the way through the material, no two pens are ever identical.

U.S. ORDERS
$5 Standard shipping with USPS for orders under $100. Free Standard Shipping (3-8 business days) for orders over $100 for all U.S. Domestic Orders, excluding the non-contiguous states of Hawaii and Alaska and off- shore United States territories, completed with USPS First Class Mail.

INTERNATIONAL ORDERS
$15 for international shipping completed with USPS (7-21 business days). Free international shipping for orders over $200.