I buy this sander from Amazon several month ago , and I have sure give it a good workout since I have have it . it track very well , and be powerful enough for even the toughest job . change the belt be far easier than most model ... a big plus . this be the first Bosch tool I have owner , and it have make I a believer in the brand . the tool be exceptionally well construct , and build to last . I could not be more pleased with the purchase .