Edding 8850 carpenter s long tip marker pen edding 4 8850 1 1001 p when you re marking drill holes through brackets holders shelves etc many pens are not long or fine enough to touch the wall or mounting surface with its long thin metal nib the edding 8850 carpenter pen is the perfect answer p p it has a 0 7 to 1mm wide bullet nib mounted on a particularly long fine tip that allows you to get to almost any hard to reach places it s filled with a waterproof low odour black ink