
Ordered this hoping to really waste drywall time and get physically tired while sanding. The device sets and displays 6 different speed settings. But he only has one, fast ball. After first use and trying to adjust, I went back to hand sanding. It was also used by a colleague and ended up eating dirt and drywall paper. I would only recommend it when used to remove heavy precipitation or textured surfaces. Even after the first use and trying again, the device started blowing dust out of the single adjustable guide handle.