it does not fit at all: that is, the spindle is too big for the hole (or square). i replaced the BB with the shimano UN55 taking the spindle length measurements of the old BB . . . and now, I have another problem . . . the Shimano UN55 which I got (68x127MM spindle) is too long for my cranks: i can't get the front derailleur to bring the chain up to the highest front chainring. So now, I need to get a shorter spindle!!! ugh!!!