KACO SDRY 100 Gel Pen Refill ST Tip 0.5mm Black (Single Bag) 10 Pieces Color Box Packaging

Uses GB/T12654 standard writing paper for testing

110mm refill writes approximately 800 meters (+/-10%), about twice the national standard (GB/T37853-2019)

100mm refill writes approximately 600 meters (+/-10%), about 1.5 times the national standard

Transparent barrel design for easy ink level monitoring

Bullet tip (standard)

ST tip

Durable tip ()

Each variant available in 110mm and 100mm lengths

Available in single refill packs and 10-pack boxes

Each refill is individually bagged

Reversible pen tip protective cap that can be inserted into the refill end to extend overall length, allowing compatibility with non-KACO pens (only for 110mm refills)

Smooth dual ball tip for consistent ink flow and writing comfort

GB/T37853-2019

GB21027-2020

Black

1. Remove the pen tip protective cap.

2. Insert the refill into the pen barrel.

3. For extended length, insert the protective cap into the refill end (110mm refill only).

Ideal for exams due to fast drying and clear, computer-readable ink

Suitable for high-efficiency writing, note-taking, and professional use

The product is recognized for stable ink flow without clogging during exams

Designed to prevent smudging and keep hands clean during intensive writing sessions

Compatible with a wide range of KACO pen models and some non-KACO pens with extension cap usage

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