Features 1、30mm Nib: Deep Hole Marker comes with a 30mm long nib that can be used to marks deep holes or hard to attain places, making it more convenient for carpenters. 2、Portable Pen Clip: The Hole marker tool is designed with a portable pen clip, allowing you to secure the carpenter ink pen to your pocket or notebook to avoid dropping or losing it. 3、Refillable Ink: The marker pen is refillable, just 3 or 4 drops of ink, too much ink will leakage, easy operation. 4、Plastic Material: The Marker Pens are made of plastic material, which is lightweight and wear resistant for a long service life. 5、Multipurpose: This architectural marker is suitable for marking location and furniture decoration, metalworking, woodworking industry, glass industry, plastics industry, automobile manufacturing industry, etc. It can meet your various requirements. Specification Item Type: Long Head Deep Hole Marker Material: Plastic, Watercolor Paint Features: Long Nib, Water Resistant Ink, Quick Drying Hole Markers Product Application: Home Decoration, Hardware Processing, Automobile Manufacturing, Etc. Package List 3 x Long Head Deep Hole Marker