I have a Diadora Sinona woman's mountain bike, only 6 months old. I put new peddles on it and new sealed bearings in just the other day. About 16 to 18" frame, just guessing. 27.5 rims and 7 speed. I can even throw in a U lock for free, if you want it. Firm on price as the money put into the new parts. And no trades!