I saw the same router bit comparison item as everyone else and this is the best bit purchase I've ever made. Everything is perfect, there are no gaps in the base behind the blades. The blades are thick and have a smooth edge. I cut it through an inch pine with a 3.25 HP router. at top speed, and when I picked up the cutter shortly after, it wasn't even noticeably warm. The cut was clean and smooth. And yes, made in the USA. Maybe the price is too high for a one-time use, but if you plan to use it regularly, I highly recommend it.