I've been using Flex shafts for over 40 years. This looked like a direct copy of a Foredom SR series and that's exactly what it is, only it is half the price. The foot pedal in the handpiece are kind of iffy but the motor and the shaft itself, the stuff I really needed, so far seems great. One thing about the arrival is that: in the warehouse or *somewhere* the box had become wet and there was a strong smell of mold when I opened it. I just took the stuff out and put the box outside.