Features: Long nib: This carpenter pen has a thin and long nib. The long nib with water and quick dry ink is perfect for marking deep holes or difficult to reach positions. Quick dry and waterproof: Long nib deep hole markers are quick dry and waterproof, which can mark most dry and no dust surfaces, such as aluminum, metal, concrete, glass, wood, and plastic, practical and sturdy to use. Specifications: Size: 137 mm/ 5.4 inches in total length, 20 mm/ 0.8 inch for the long nib Color: Black & Red & Blue & Green & Brown Material: ABS Package Contents: 1 set x Deep hole marker pens Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Wide Applications: this long nib deep hole pens can be applied on a variety of surfaces, such as wood, metal, glass and plastic, suitable for home decoration, hardware processing, automobile manufacturing, industrial processing and more Quality Material: this carpenter pen adopts quality material, strong and reliable, sturdy and hard to break, has a long service life; The pen body is long, the nib is thin and round, easy to handle Proper Size: our multi purpose deep hole marker has a total length of 137 mm/ 5.4 inches and the long nib of 20 mm/ 0.8 inch for easy marking in deep holes or hard to reach areas, easy to use and convenient to carry around Pack: 60 pieces of multi purpose deep hole pens in 5 various colors are available, including black, red, blue, green and brown, 12 pieces of each color; Sufficient quantity can meet your use and replacement needs, and you can share them with your colleagues and friends Practical and Useful: different from other markers, our woodworking pens with the long nib design can easily mark deep holes or areas that are hard to reach with regular markers, making your woodworking easier