Brown transparent sand brown large-capacity piston inking pen for business office writing and calligraphy practice

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Core basic parameters

Inking structure: Integrated piston negative pressure inking, no ink bag design, large-capacity ink storage chamber, transparent chamber of the pen barrel to visually observe the remaining ink volume, single filling of ink ≈ 3~4 ordinary ink bag capacity, suitable for players who like to refill color ink.

Pen body specifications: hexagonal pen cap + cylindrical pen barrel, the entire pen is made of acrylic resin, which is not easy to roll when held; the weight of the bare pen is about 28g, so the hand will not be tired when writing for a long time.

Pen tip configuration: rose gold-plated steel tip, regular factory nibs can be selected from EF (0.38), F (0.5), M (0.7), and artist tips; F tip is the mainstream specification for daily calligraphy practice, with smooth and partial damping, suitable for writing Chinese characters.

Color matching: caramel brown translucent pen cap + transparent demonstration pen barrel + rose gold bronze metal accessories (different from the original black/transparent basic model, the brown amber cap + bronze gold ring are the highlights of the limited edition).

Appearance color and material details

1. Pen cap part

• Hat body: amber caramel brown translucent resin, transparent brown texture, hexahedral shape
• Metal accessories: one-piece rose gold pen clip + upper and lower double-circle bronze gold-plated rings, curved anti-slip pen clip, can be held in a notebook pocket, the metal plating is delicate and wear-resistant, retro coffee brown + warm gold color matching, matching the retro atmosphere of coffee and whiskey.

2. Pen barrel part

• The fully transparent and high-transparency PC demonstration pen barrel fully exposes the internal black piston structure. After filling with ink of various colors, the pen barrel transforms into a color display tube, which is a must for color ink players to "fill ink for display". The upper and lower ends are matched with bronze gold rings of the same color, and the color of the metal parts of the pen cap is unified.

3. Pen tip assembly

• Rose gold-plated stainless steel nib, Sanwentang original carved nib, with brand logo; transparent nib grip assembly, you can intuitively see the capillary ink supply structure, the ink supply is stable, and the ink is not easy to break and whiten.

Core Function Highlights

1. Large-capacity piston inking (the trump card of the ECO series)

• Rotate the piston knob at the end of the pen to absorb ink, eliminating the need for frequent replacement of ink sacs. It is cost-effective and compatible with bottled carbon ink, color ink, and iron gall ink. The transparent compartment allows you to check the ink balance in real time to avoid empty writing with dry ink.

2. Hexagonal anti-rolling design

• The pen cap has a hexagonal structure, so it will not fall or bump when placed flat on the table, making it user-friendly on student desks and office desks.

3. Fully disassembled and easy to maintain

• The entire pen can be fully disassembled: the pen cap, pen barrel, nib assembly, and piston assembly are all detachable. It is easy to disassemble and clean without ink accumulation for a long time. It is suitable for frequent replacement of different color inks.

4. Writing feel adjustment

• The original steel tip is pre-polished at the factory. The EF tip is thin and suitable for note annotation. The F tip is suitable for daily calligraphy practice and letter writing. The steel tip is wear-resistant, so novices don’t have to worry about breaking in.

Applicable scenarios

Daily use for students: practicing calligraphy in middle and high schools, taking notes in class, writing homework, large capacity and less ink filling;

Colored ink collection: transparent demonstration rod + caramel retro color matching, filled with ink of various colors to make desktop ornaments, ink color test pens;

Office writing: business signatures, hand journals, and retro brown gold appearance suitable for commuting;

Fountain pens as gifts for beginners: Piston pens are the first choice for beginners. The price/performance ratio is higher than imported demonstration pens, and the retro color matching makes them decent gifts.

Tips for buying nibs

EF tip (≈0.38mm): fine print, postgraduate entrance examination notes, small print notebook;

F tip (≈0.5mm): preferred by the public, suitable for Chinese calligraphy practice and daily use;

M tip (≈0.7mm): English writing, artistic calligraphy practice, and ink color spreading;

Package notes: The factory-standard bare pen does not contain ink, and you need to match it with bottled ink (color ink/non-clogging high-quality carbon is recommended).