Here I have a Saracen mountain bike. 15 inch frame with 27.5 inch wheels I have owned the bike for just over A year it's has minor scratches but nothing major it come with 2 sets of wheels one set are 26.5 and the original are 27.5 , the original set have been changed as the back wheel a few spokes have broke can be fixed and the other wheel is buckled so may need a new back wheel or respoked , plus the break are working but may need to be changed. Does need a little tlc any more questions message me , no time wasters !