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.
Description
Reviews
| 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 |
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.
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.