Multi-Color Deep Hole Long Head Marking Pen with 20mm Tip for Metal, Wood, Glass, and Colloids

When you need to mark inside deep holes, narrow crevices, or recessed surfaces, standard pens simply cannot reach the target. This special-purpose marking pen features a 20mm long pen tip that extends into hard-to-access areas, allowing precise application on metal, wood, glass, and colloids. The ink is formulated to be fast-drying and resistant to smudging, so marks stay clear and legible without lengthy delays. Available in four colours—black, red, blue, and green—this pen provides flexibility for colour-coding, identification, or simple marking tasks. Its xylene-free composition makes it a practical choice for workshops, studios, and industrial environments where air quality matters.

Features and Construction

Built around a straightforward design, this marking pen focuses on delivering reliable performance in challenging marking scenarios. Its practical construction supports both everyday and occasional use across multiple material types.

Material and Build

The pen uses a xylene-free ink formulation, which reduces the strong odour and health concerns associated with solvent-based markers. This makes it suitable for use in enclosed or ventilated spaces. The outer casing is designed for comfortable grip, and the pen tip is securely fitted to withstand repeated marking on hard surfaces.

Size and Practical Fit

The defining feature of this pen is its 20mm long pen tip, which extends beyond the barrel to reach deep into holes, grooves, or corners. This length is the key differentiator, enabling marks where shorter tips fail. The overall pen size is compact enough for easy storage in a tool drawer or pocket.

Uses and Placement

This marking pen is engineered for tasks that demand accuracy in restricted spaces. It adapts to professional and domestic settings alike, with a colour range that supports organisation.

Event or Professional Use

In industrial environments, professionals working with metal components, glass panels, or wood products often need to mark deep recesses. The 20mm tip allows engineers, fitters, and inspectors to label parts without disassembly. The fast-drying ink ensures marks remain intact during handling and transport.

Everyday Home Use

At home, this pen works well for labelling tools, marking measurements on wood stock, or identifying glass containers. The four colour options help users sort items by type, date, or ownership. The xylene-free ink makes it safer to use indoors, even in small workshops or home offices.

Benefits and Buying Value

Choosing the right marking pen saves time and reduces the headache of unreadable marks. This model delivers consistent results across a range of materials and situations.

Reuse and Low Maintenance

The pen is designed for repeated use with minimal upkeep. Simply cap it after each use to preserve ink life. If the tip collects residue from multiple markings, a quick wipe restores performance. The ink reservoir provides enough volume for many applications before replacement.

Why Choose This Product

Compared to standard markers, the 20mm long tip offers a clear advantage when marking deep or obstructed surfaces. The colour variety ensures you can maintain a colour-coding system without buying multiple brands. With its xylene-free and fast-drying properties, this pen meets practical needs without unnecessary complexity.