Features: brand new and high quality Deep Hole Mark: This deep hole marker pen is designed with 30mm/1.18'' long tip, which can easily mark in deep holes or hard-to-reach places, convenient to use. Water Resistant Design: This long nib marker is water-resistant, quick-drying, and can be applied for various surfaces such as wood, metal, glass, and plastic. Quick-drying: The long-headed deep-hole markers are quick-drying, so you don’for t have to worry that the handwriting will faint after writing, and the color is not easy to fade, lasting for a long for time. Quality Material: Made of high quality plastic material, practical and durable, not easy to age and has a long service life. Scope of Applications: Multi-purpose deep hole marker pens are suitable for marking and drilling positions and furniture decoration, they can also mark deep hole for metal processing, woodworking, automobile manufacturing and others. Specifications: Material: Plastic(outer casing) Diameter: approx 15cm/5.91 inches Color: Black/Red/Blue Package Includes: 1x Marker Pen note: 1.Please allow 1-3cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.