Goods received quickly. One of the housing latches was damaged. The first time I used it, I pre-drilled a small center hole to guide the center drill with the kit. The core bit was found to wobble excessively and damaged the surface of my concrete (picture). He took out the second centering nozzle, put it on a flat surface (photo) and found that it was even worse than the first. I put everything back in the suitcase and started returning it.