User blog comment:Bennlimos/HxH Questions & Thoughts Discussion 2/@comment-16938192-20140305000335/@comment-48285-20140305053514

2) I believe what we're trying to get across here is that they're just regular pins and needles that have the manipulator's nen infused in them. Take the example Wing showed Zushi: a regular piece of paper from a book with Wing's Nen infused in it. When Wing threw the paper, it sliced right through a glass of juice and stuck in the wall. Now, Wing is an Enhancer so it's not really the same. But it is the same concept.