20mm Deep Hole Long Nib Marker Pens – Waterproof 8pcs Set

Mark Any Surface with Precision – Deep Hole Long Nib Marker Pens

Whether you're tackling a woodworking project, marking metal, decorating tiles, or scribing inside tight spaces, these 20mm Deep Hole Long Nib Marker Pens are the versatile tool you've been looking for. The extended nib design lets you reach into drilled holes, narrow channels, and recessed areas that ordinary markers simply can't access — making them ideal for perforating work, pipe layouts, bathroom installations, and detailed craft projects.

Why You'll Love These Markers

• Extra-Long 20mm Nib: Engineered to reach deep holes and confined spaces for accurate marking every time.
• Waterproof Ink: Marks that stay put — resistant to moisture, splashes, and humid environments like bathrooms and workshops.
• Multi-Surface Compatible: Works on metal, wood, plastic, ceramic tile, stone, PVC, and more.
• 8-Piece Set: Plenty of markers to keep at your workstation, toolbox, or job site.
• Durable Construction: Robust barrel built to withstand everyday workshop and construction use.
• Multi-Purpose Design: Perfect for woodworking, plumbing layouts, bathroom fitting, metalwork, interior decoration, and DIY crafts.

Product Specifications

• Nib Depth: 20mm long nib
• Ink Type: Waterproof
• Package Quantity: 8 pcs
• Type: Deep Hole Marker Pen
• Country of Origin: Made in Mainland China

Perfect For

• Woodworking & carpentry marking
• Metal perforating & pipe marking
• Bathroom & plumbing installations
• Tile, stone & interior decoration
• General DIY, crafts & home improvement

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For safety guidance on using markers and permanent inks in work environments, refer to the U.S. Consumer Product Safety Commission (CPSC) for consumer product safety information.

Learn more: Staedtler

Frequently Asked Questions

Q: What surfaces can the 20mm deep hole long nib markers be used on?

A: These waterproof long nib markers are designed for multi-surface use, including wood, metal, plastic, ceramic tile, stone, PVC pipe, and more — making them ideal for woodworking, metalwork, bathroom installations, and general DIY projects.

Q: Are these markers truly waterproof?

A: Yes! The ink is waterproof and moisture-resistant, ensuring your marks remain visible even in humid environments like bathrooms or outdoor job sites where exposure to water is common.

Q: What makes the long nib design useful for deep hole marking?

A: The 20mm extended nib allows the marker to reach deep into drilled holes, narrow grooves, or recessed areas that standard short-nib markers cannot access. This makes them especially valuable for perforating work, pipe fitting, and precision woodworking layout tasks.

Q: How many markers come in the package?

A: Each set includes 8 pieces, giving you plenty to distribute across your toolbox, workbench, and job site so you always have one within reach.