The deep drill pen has a long nose, which can be applied to work on those deep holes or hard-to-reach areas to mark, making marking simple and quick, and the mark pen is written fluently and continuously, not easy to smear or smudge, making your carpentry easier. Our multi-purpose deep hole marker has a total length of 137 mm/5.39 inches and a long nib of 20 mm/0.8 inches for easy marking in deep holes or hard-to-reach areas. easy to use and convenient to carry around. These pens have clip designs, can be clipped on your pocket, folder, or . not easy to miss out on and carry around. 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, the handwriting is not easy to fade, easy to handle. The writing line width is 1mm. There are 3cm scale marks on the pen body for easy viewing. Multi-purpose deep hole markers are suitable for marking and drilling positions and furniture decoration. It can also mark most dry and dust-free surfaces like aluminum, metal, concrete, stone, glass, wood, plastic, etc, suitable for home decoration, hardware processing, automobile manufacturing, industrial processing, and more. You get a total of 75 pieces of deep hole marker pens in 5 colors, namely, black, white, red, green, blue colors, 15 pieces per color, sufficient quantities and diverse colors can satisfy your daily use and replacements, you can also share them with your friends and colleagues. Color:As Shown Material:plastic Package Contents: 75 * long head 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.