Kodak makes very good hobby tools and general practice products for professionals. It's not as pretty as their five flutes, but still good. Five flutes make the piece smoother and cleaner, but four is pretty standard and will do the job just fine. I noticed a certain brittleness in the carbide versions. So be sure to mount your material on the router first to ensure not only can you cut it cleanly, but you don't have vibrations that can ruin thinner parts.