Wow, I feel cheated on the description of this product. I thought I would buy a cheap set of cutters, but I actually only bought one! Yes, if you look closely and can interpret the confusing description, you can find out. "Adv-one" is not the name of the project, but "one" seems to refer to the crowd. It doesn't matter that nine cutters are shown and part of the description reads: Cutter Diameter (D): 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 25mm, 35mm. Beware of these confusing, misleading descriptions. If you are selling a single instrument, do not post a picture of the entire set or print a misleading description.