SizeCenter to Top:- 20. SteererTube:- 1 1/8. Headsetdiameter:- ZS44 cups upper and lower. BBShell width:- 68mm. Rearhub width+axle:- 135x9mm QR. Seatpostdiameter:- 31.6mm. Brake mounts:- Brake mount or IS Disc Mount. One small Dent to the top tube, caused during storage. All threads are in good condition. Some minor wear and scratches. Sale will include the seat clamp, but the seat post is not included. Lastly if a mistake has been made, or an error has occurred then please come and speak to me, we are all human and mistakes can an will happen from time to time, if this does happen then please speak to me to resolve the matter to all parties satisfaction before leaving feedback.