Attributes

Brand	-
Category	Stationery, Educational Electronics & Office Supplies / 记号笔/粗笔
Origin	-
Brand	Deli
Model Number	SK109
Ink Type	Oil-Based
Tip Size	Large Thick Tip (approx. 5mm)
Water Resistance	Yes, Waterproof
Fade Resistance	High, UV Resistant
Drying Time	Quick-Drying
Package Quantity	5 Pens per Pack
Ideal Surface	Cardboard, Plastic, Metal, Wood
Primary Use Case	Logistics Coding & Construction Marking

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

High capacity lasts long

These pens hold a lot of ink. I have been using the same pen for two weeks marking hundreds of express delivery parcels, and it still feels full.

Anonymous

Mar 22, 2026

Rating: 4/5

Good value for bulk buying

Buying the pack of 5 is much more economical than single pens. The quality is consistent across all colors in the pack. Tip is sturdy and doesn't fray easily.

Anonymous

Mar 20, 2026

Rating: 5/5

Survives outdoor conditions

I used this to mark construction materials left outside in the rain. The writing remained clear and did not fade after three days of exposure. Excellent durability.

Anonymous

Mar 19, 2026

Rating: 5/5

Perfect for our warehouse labeling

We use these daily in our logistics center to mark boxes. The ink dries instantly and doesn't smear even when the packages get wet. Highly recommend for industrial use.

Anonymous

Mar 14, 2026

Rating: 5/5

Best marker for glossy surfaces

Regular markers slide off our plastic bins, but this oil-based pen grips perfectly. The lines are bold and easy to read from a distance.

Anonymous

Mar 06, 2026

Rating: 4/5

Great ink flow, strong odor

The marker writes very smoothly on plastic and cardboard. The only downside is the strong smell of the oil-based ink, so make sure to use it in a ventilated area.

5 FAQ

Q: How do I remove the ink if I make a mistake?

A: Since the ink is waterproof and oil-proof, water will not work. You can usually remove it using rubbing alcohol, acetone, or a dedicated marker remover.

Q: Are the red and blue tips the same size?

A: Yes, both the red and blue variants in this pack feature the same large thick tip size, ensuring consistent line width regardless of color.

Q: Can this marker write on glass surfaces?

A: Yes, the oil-based formula adheres well to non-porous surfaces like glass, metal, and plastic, though it may require a solvent to remove.

Q: Is the ink toxic if it touches skin?

A: While generally safe for intended industrial use, we recommend avoiding prolonged skin contact and washing hands thoroughly after use. It is not intended for body art.

Q: Does the cap seal tightly to prevent drying out?

A: Yes, the SK109 model features a secure snap-on cap designed to keep the tip moist and prevent the ink from drying out between uses.

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