4-Pack 20mm Long Nib Deep Hole Marker Pens – Wood & Metal

4-Pack 20mm Long Nib Deep Hole Marker Pens

Take your woodworking, metalworking, and DIY projects to the next level with these innovative long nib deep hole marker pens. Featuring an extra-long 20mm round-toe tip — twice the length of standard markers — these pens let you mark precisely inside deep holes, recesses, and hard-to-reach surfaces that ordinary markers simply can't reach.

Whether you're a professional tradesperson or a weekend DIY enthusiast, these markers are designed to make your work faster, more accurate, and more reliable. Made in Mainland China.

Key Features

• 🖊️ Extra-Long 20mm Tip: Reaches deep into holes, slots, and recesses for precise marking — perfect for drilling and punching positioning work.
• ⏱️ 72-Hour Cap-Off Durability: The oil-based ink won't dry out for up to 72 hours without the cap, keeping you in your workflow without interruption.
• 📏 Graduated Pen Body: Built-in measurement markings on the barrel make it easy to gauge depth and position, reducing errors and improving accuracy.
• 💧 Waterproof & Fast-Drying Ink: Oil-based permanent ink is water-resistant, fade-resistant, and fast-drying — ideal for marking on metal, wood, glass, and more.
• 🔩 Punching & Positioning: Easily locate drill and punch positions in deep holes, minimising mistakes and saving valuable time on the job.
• 🛠️ Multi-Surface, Multi-Industry: Suitable for woodworking, metal fabrication, glass installation, drilling, and general industrial marking tasks.

Specifications

Who Are These For?

These long nib markers are an essential tool for:

• Carpenters and woodworkers who need to mark inside dowel holes, mortises, and joints
• Metal fabricators and machinists marking deep bores and drill points
• Glass installers marking precise fitting positions
• DIY hobbyists and crafters working on detailed art and decoration projects
• Construction professionals needing reliable, deep-hole marking on site

Related Products You May Like

• 10 Dual-End Temporary Tattoo Markers – Body & Face Paint Pens
• 1/4" Hex Wire Twister Drill Attachment – Rebar Tie Wire Tool

For more information on safe handling of permanent markers and solvents in the workplace, visit the OSHA Chemical Hazards resource.

Frequently Asked Questions

Q: What surfaces can the long nib marker pens write on?

A: These long nib marker pens are designed to write on a wide variety of surfaces including wood, metal, glass, plastic, and paper. The oil-based permanent ink adheres well to most hard surfaces, making them ideal for woodworking, metal fabrication, glass installation, and general industrial marking.

Q: How long does the ink last without the cap on?

A: The oil-based ink is formulated to remain wet and workable for up to 72 hours without the cap, so you won't lose your marker mid-task. Always replace the cap after use to maximise the overall lifespan of the pen.

Q: What makes these markers better than standard markers for deep holes?

A: The 20mm long nib tip — twice the length of a typical marker — allows you to reach deep inside holes, bores, and recesses that ordinary short-tip markers simply cannot access. The graduated barrel also helps you measure depth as you mark, reducing guesswork and errors.

Q: Are these markers waterproof?

A: Yes. The oil-based permanent ink is waterproof, fast-drying, and fade-resistant, ensuring your markings stay visible even in damp workshop environments or when working with materials that may be exposed to moisture.