Check the listing for details. Deep Hole Marker Pens, 6Pcs Ink Waterproof Pen, Blue. Condition: New. Listed at 19.24 USD. These waterproof Deep Reach Markers can be used in industries such as decoration, wood processing, glass manufacturing, automotive manufacturing, etc.SpecificationInk Color: Blue;Overall long: 132mm/5.2 inch;Pen tip length:22mm/0.87 inch;Packing List: 6 Pcs Deep Hole Marker PensAdvantage22mm/0.87 inch long pen tip makes it easy to mark deep holes or hard-to-reach places. Smooth mark with oil-based ink, waterproof, quick-drying, and strong adhesion.InstructionThe design of the scale on the deep-hole marker pen barrel makes it easy to measure the size at will. The pen cap can be clipped to your pocket to prevent the pen from getting lost.NotePlease close the pen cap after use to prevent the pen tip from touching things for a long time and causing the ink to penetrate.