The BSIDE 20mm long nib markers are designed for precise marking in deep holes and on various surfaces. This set of 8 pens provides waterproof and fast-drying ink that works on metal, wood, glass, and more. Ideal for woodworking, bathroom projects, and furniture decoration, these markers help you mark drilling positions and cutting lines with accuracy.

Each pen features a 20mm long nib that reaches into recessed areas and tight spaces where standard markers cannot go. The ink is water-resistant and dries quickly, so your marks stay visible and do not smear. The set includes five colors: black, blue, red, green, and white, giving you flexibility for different materials and visibility needs.

These markers are built for durability and everyday use in workshops, construction sites, and home improvement tasks. The plastic body is lightweight and easy to grip, while the 0.7-1.0mm line width provides a clear, consistent mark. Whether you are laying out cabinet hardware, marking pipe locations, or working on automotive parts, these pens deliver reliable performance.

Environmentally friendly and free from harmful solvents like xylene, these markers are safe to use in enclosed spaces. The white pen is specially formulated for non-ferrous metals and should not be used on other materials. For all other colors, you can mark on wood, metal, glass, plastic, and more without worry.

Key Features and Benefits

- 20mm long nib that reaches deep holes and tight spaces for accurate marking

• Water-resistant and fast-drying ink that stays put and resists smudging

• Five vibrant colors (black, blue, red, green, white) for contrast on different surfaces

• Environmentally friendly formula with no xylene or other harsh chemicals

• Line width of 0.7-1.0mm for clear, precise marks every time

Who Is This For

- Woodworkers who need to mark drill holes and cut lines in deep recesses

• DIY enthusiasts working on furniture assembly, shelving, or bathroom installations

• Metal fabricators and automotive technicians marking processing positions on parts

• Anyone who needs a waterproof marker for outdoor or high-moisture environments

Usage Scenario

Tom was installing new cabinet hardware in his kitchen. The old screw holes were hidden inside deep recesses, and his standard marker could not reach them. He picked up the BSIDE long nib marker, and the 20mm tip slid right into the hole, leaving a clear mark on the metal bracket. The ink dried quickly, and he drilled the new holes exactly where needed. No guesswork, no mistakes.

Micro Comparison

Standard markers often have short nibs that cannot reach into deep holes or narrow gaps. These BSIDE markers feature a 20mm long nib specifically designed for such tasks. While other deep-hole markers may use solvent-based inks that smell strong, this set uses an environmentally friendly formula that is safe to use indoors. The five-color set gives you more options than typical single-color alternatives.

Specifications

Material: Plastic

Ink Colors: Black, Blue, Red, Green, White

Nib Length: 20 mm / 0.79 in

Line Width: 0.7-1.0 mm / 0.028-0.039 in

Tip Type: Long nib head

Package Includes

- 8 x Long nib markers (color assortment as shown)

Why You Will Love It

You will love how easy it is to mark deep holes and tight spots without bending or straining. The waterproof ink stays visible even in damp conditions, so your marks last through the job. With five colors in one set, you always have the right marker for the surface and the task.

Questions and Answers

Question: Can I use these markers on wet surfaces?

Answer: Yes, the ink is water-resistant and works on damp surfaces, but for best results, mark on dry, clean surfaces.

Question: What is the white pen used for?

Answer: The white pen is designed for marking on non-ferrous metals like aluminum and brass. It is not suitable for wood, glass, or other materials.

Question: How long does the ink take to dry?

Answer: The ink dries in about 10-15 seconds on most surfaces, depending on humidity and material porosity.

Question: Can I refill these markers?

Answer: No, these are disposable markers. When the ink runs out, replace them with a new pen from the set or purchase a new pack.

Question: Do these markers work on plastic surfaces?

Answer: Yes, they work on most plastics, though some smooth or non-porous plastics may require a slightly longer drying time.