Deli S657 0.5mm Needle Tip Gel Pen Black 12pcs/Box Back-to-School Essential Student Office Rollerball Pen

deli•Ballpoint Pen

Deli S657 0.5mm Needle Tip Gel Pen Black 12pcs/Box Back-to-School Essential Student Office Rollerball Pen

CN¥22.80

SKU: 8000830

Status:In Stock (98)

ID: 8000830

Weight: 140.00 g

Dims:140x76x30 mm

Specifications

Product Features: Regular packaging
Pen tip characteristics: Full needle tube
Refill color: Black
Characteristics: Quick dry
Stroke thickness: 0.5mm
Closing Method: Cap Removal

Variants / Sale Attributes

Color: Full syringe, 12 black pieces

Package Contents

12 neutral pens

Product Description

Product Specifications

Overview

Brand: deli
Product Name: Finepoint High Capacity Liquid Rollerball Pen (Model: S657)
Pen Type: Liquid ink rollerball pen with direct ink injection design
Ink Capacity: 1100 meters writing length (approx. 30,000 Chinese characters)
Ink Type: Water-based oil ink, stable performance, low impurity, vibrant color, anti-clogging
Tip Size: 0.5 mm full needle tube tip with tungsten carbide ball, high precision assembly (0.005 mm tolerance)

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Multi-layer fin structure with dense upper fins and sparse lower fins to regulate internal pressure and stabilize ink flow; air gap design eliminates vacuum in upper pen tube to ensure smooth ink flow even after accidental drops

Ink Visibility

Transparent ink reservoir for real-time ink level monitoring

Writing Performance

Smooth writing without ink skipping or leakage; stable ink output; does not scratch paper; soft and elastic writing feel

Durability & Reliability

Stable performance with anti-clogging features; tested and certified by professional institutions; designed for long-term use with 31 years of industry expertise

Packaging

12 pens per box; box dimensions 148 x 28 x 78 mm

The pen barrel and refill are integrated and non-replaceable

Writing length tested by line drawing experiments; actual length may vary depending on writing habits

Assembly precision ensures smooth ink flow and durability

Suitable for professional and daily writing needs, ideal for study and office use

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Deli S657 0.5mm Needle Tip Gel Pen Black 12pcs/Box Back-to-School Essential Student Office Rollerball Pen

Specifications

Variants / Sale Attributes

Package Contents

Product Description

Overview

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