I purchased this around 2008 from Boston Kennel. (I think it was around 10,000 yen at the time? It seems like there are many cheaper options now.) I used it for a large-sized medium dog (Labrador mix). It requires no maintenance, and it removed loose hair surprisingly well. The dog didn't seem to mind it either. It was especially useful during seasonal shedding. It's old, but I think it's still usable, so I'm offering it. The teeth are clean, with no dirt or bending. (I've marked it as having scratches and dirt due to its age.)