ACCORDING to my experience, this 5 Inch Action Random Orbital Sander is a complete waste of money... The product is marketed as an "industrial and scientific" piece of equipment but fails to deliver on its promises. The sander barely worked for a few minutes before the pad detachment mechanism failed. The sanding pads would hardly stay attached and frequently flew off during operation which was both dangerous and incredibly frustrating. The only positive aspect of this sander is that it arrived on time. Disappointing to say the least..