Giant Xtc Composite 1 Mountain bike frame. 21 centre to top. 23 1/4 top tube. Disc or rim brake compatible. Rim brake posts not included. The frame was part built but not ever ridden. There are very few age related marks. The worst being the mark on the headtube unfortunately done in storage. Thank you for looking at my item. Please check out my other car and bike parts. Please ask for a quote if you live in the highlands or Islands.