Top Quality !
Very good quality. 10,000 rpm nearly silent. Less than 1 thou run out. Mounting bracket is square. Only surprise was that forward and reverse pins are pulled up to vcc (24V) so I added a buffered driver. Open the speed controller before powering up. My heatsink spacer moved during shipping. I had to file down the standoffs 0.25mm for a tighter fit. Can't wait to start milling pcbs!