5PCS Long Head Deep Hole Marker Pens, 20mm Deep Reach Markers, Long Nose Marker, Waterproof Construction Markers Marking Tool, Permanent Markers Carpenter Ink Marker Pens, Metal Marking Pen (Blue)

【Long Head Deep Hole Marker】Nib size (LxW): 20*1.5mm. It features an elongated nib that can fit between narrow gaps or write inside small spaces, such as nail and screw holes in frames and lumber.
【All-Round Marker】Long Head Deep Hole Marker is suitable for furniture decoration, book shelf, lamp drill hole position. Also marks deep holes for metal processing, automobile manufacturing, and other production industries.
【Quick Dry & Waterproof】Long Head Deep Hole Marker is quick-drying, smudge-proof, and waterproof. It can mark most dry and dust-free surfaces like aluminum, metal, concrete, glass, wood, plastic, etc. And it's convenient to use.
【Sturdy & Comfortable】Adopts high-quality PP material, which is durable, solid, and not easy to aging. The overall size is stable, reliable, and comfortable on the hand. A 60mm ruler along the side which can help you with measurements.
【Useful Marking Tool】Long Head Deep Hole Marker is ideal for handiwork and DIY projects and it's thoughtfully-designed marker make bold marks and can reach difficult spots. Special markers for carpenters, DIYers, etc.