I have a variable speed sander not single speed, which is why I bought it. on the spec sheet at store it shows 7,500 -12,000 which must be a misprint because the low speed is much lower, which is good for end grain. I haven't used it for extended times, but it is much like my larger, older Bosch I love, but a true palm sander which I wanted . Like the on/off switch location. Good dust removal. The dust canister lid could be better for ease of opening. Haven't put the shop vac on it, yet. I think this will be my go to sander.