10 Pack Long Nib Markers 20mm Deep Hole Multicolor
Ten markers with 20 mm nibs reach deep holes and mark wood, metal, concrete, glass and plastic
- ColorMulticolor
- 20 mm nib reaches deep holes and tight gaps
- Quick-dry waterproof ink resists smudging on wet surfaces
- Ten markers in five colours give spare pens for every job
- Sturdy PP barrel with metal tip writes smoothly and lasts
- Marks wood, metal, concrete, glass, plastic and more
10-Pack 20mm Deep-Reach Markers
This set supplies ten long-nib markers with a 20mm by 1.5mm tip designed to reach inside drill holes, screw holes, seams and other tight gaps. The quick-drying, waterproof ink resists smudging and fading on wood, metal, concrete, glass, plastic and similar dry, dust-free surfaces. Two pens each in black, white, red, green and blue give tradespeople and DIY users colour-coded options for layout, identification and inspection marks. The polypropylene barrel is lightweight, pocket-sized and built to withstand daily jobsite handling.
Replaces Short-Tip And Standard Markers
Conventional markers cannot reach the bottom of deep holes or narrow channels, forcing users to estimate or switch tools. These 20mm nibs eliminate that gap when marking anchor positions, pilot-hole centres or joinery layout inside cavities. The upgrade is worth it whenever a standard tip leaves the mark short of the work surface, especially on structural timber, steel fabrication or masonry where a missed reference point means rework. Buyers who only mark flat, open faces will not need the extra reach.
Limited To Dry, Dust-Free Surfaces
The ink formulation requires a clean, dry substrate to bond; oil, moisture, heavy dust or wet concrete will prevent adhesion and legibility. Very rough or porous textures may also cause the fine nib to skip or wear faster than on smooth materials. The marker is not intended for permanent labelling on oily metals, submerged applications or surfaces that remain damp during curing. Users needing marks on wet, oily or continuously submerged substrates should select a product formulated for those conditions.
Highlights
- 20 mm nib reaches deep holes and tight gaps
- Quick-dry waterproof ink resists smudging on wet surfaces
- Ten markers in five colours give spare pens for every job
- Sturdy PP barrel with metal tip writes smoothly and lasts
- Marks wood, metal, concrete, glass, plastic and more
Specifications
| Color | Multicolor |
|---|
Questions about this item
How wide is the nib on these 20 mm deep-reach markers?
The nib measures 20 mm long by 1.5 mm wide, letting it reach inside drill holes and tight gaps.
Do I need to press hard or prime the nib before the first mark?
Hold the pen upright, press the nib down once until ink flows, then write with light pressure — pressing hard can bend the thin tip.
When will the ink run out and can I refill the marker?
Each marker is disposable; when the quick-dry waterproof ink stops flowing you replace it with one of the other nine pens in the pack.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
Zoro Select Probe Covers 15-617-000 PK500 Transparent
- Transparent
HealthSmart 18-220-000 Infrared Digital Thermometer Gray/White
- Gray/White
HealthSmart Foods, Inc. 04-655-001 Digital Blood Pressure Monitor Arm Adult Black
- Black



