Are the wheels 26” or 24”? It looks small. I think this is around a ‘91 model and the STI in the name refers to the shifters now attached to the brake levers aka, Shimano Total Integration. It looks like it needs a new saddle and probably a good tune so 175 seems high to me.
If this is 24” wheels it’s a pass unless you’re very petite or it it for a kid
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk