Description [Long Nib Marker] The deep-hole carpenter pen designed with extended and needle-nose tip of 30 mm in length, reaching hard-to-reach areas where other carpenter marker do not go, suitable for marking through holes or in other tight areas. [Affordable Set] The package contains 6 woodworking pens, the refill colors: red, blue, the nib line width is 1 mm, and each pen can write about 200 m, which can meet your woodworking marking needs for a long-term. [High-quality Materials] These pens are made of PP shell and carbon steel nib, robust and wear-resistant; they contain permanent ink, waterproof and smudge-proof, quick-drying, xylene-free, and low odour. [Marks on Various Surfaces] The borehole marker can draw on metal, plastic, stone, glass, wood, paper, etc. [Warm Tips] Please cover the pen cap when not in use, so that it can be used stably for a longer time.Products from NIUNIUs store