Hey Kostas1, like Gray Bread said, it's cheap for what your getting. I have three Thunder Tiger pro 46s. My nine year old, and first, still runs great, that's what you get from a ball bearing engine. If you go cheap expect your motor to run great for three years and then have problems. What ever motor you chose make sure you don't go to cheap, you'll pay for it in the long run. Just my two or three or four cense