Deep Hole Marker Pens – Waterproof Long Nib Construction Pen
Deep Hole Marker Pens – Waterproof Long Nib Construction Pen
KOQZM Deep Hole Marker Pens – Long Nib Waterproof Construction Markers
Meet the ultimate marking tool for tradespeople, DIYers, and workshop pros. The KOQZM Deep Hole Marker features an extra-long nib (~2 cm / 0.79 in) that reaches deep into drilled holes, recesses, and tight cavities where standard markers simply can't go. Whether you're laying out marks on wood, metal, glass, ceramic, or paper, this pen delivers crisp, lasting lines every time.
Made in Mainland China.
Why You'll Love These Markers
- Extra-Long Nib: Approx. 2 cm (0.79 in) reach — perfect for deep-hole and blind-spot marking in drilling, carpentry, and fabrication work.
- Waterproof & Ink-Resistant: Marks stay put on wet or oily surfaces — ideal for job sites and industrial environments.
- Light-Resistant & Fast-Drying: Ink won't fade under UV exposure and dries quickly to prevent smearing.
- Smooth, Consistent Lines: Fine 0.1 cm (0.04 in) tip width for precise, clean markings.
- Multi-Surface Compatible: Works on metal, wood, glass, ceramics, and paper products.
- Colorful 12-Color Set: Includes black, red, blue, green, white, and more — easy color-coding for complex projects.
- Compact & Portable: Pen length approx. 13.7 cm (5.39 in) — slips easily into a tool belt or apron pocket.
Specifications
| Brand | KOQZM |
| Pen Length | ~13.7 cm / 5.39 in |
| Nib Length | ~2 cm / 0.79 in |
| Line Width | ~0.1 cm / 0.04 in |
| Colors Included | 12 Colors per Box (black, red, blue, green, white & more) |
| Compatible Surfaces | Metal, Wood, Glass, Ceramics, Paper |
| Origin | Mainland China |
Ideal Applications
These deep-reach markers are purpose-built for professionals and hobbyists working in:
- Home renovation & construction carpentry
- Hardware machining & metalworking
- Automotive manufacturing & assembly
- Industrial production & quality control marking
- General workshop layout and measurement tasks
Package Contents
1× Deep Hole Marker Pen (sold individually; available in multiple colors)
Note: Due to lighting and photography angles, slight color variation from images may occur. Minor dimensional tolerances may apply due to manual measurement. Actual product prevails.
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Frequently Asked Questions
Q: What surfaces can the KOQZM Deep Hole Marker write on?
A: The KOQZM Deep Hole Marker is compatible with a wide range of surfaces including metal, wood, glass, ceramics, and paper products, making it versatile for construction, woodworking, and industrial marking tasks.
Q: How long is the nib on the deep hole marker pen?
A: The nib is approximately 2 cm (0.79 inches) long, allowing it to reach deep into drilled holes, recesses, and confined spaces that standard markers cannot access.
Q: Are these construction markers truly waterproof?
A: Yes — the ink is water-resistant, light-resistant, and fast-drying, so your marks hold up reliably even in demanding job-site conditions involving moisture or UV exposure.
Q: How many colors come in a box?
A: The set includes 12 colors per box, which may include black, red, blue, green, white, and additional colors — great for color-coded project marking.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.