XHSPORT XH 31.828.6mm(Diameter) Cycling Carbon Fiber Handlebar Stem for MTB Road Bike Bicycle Perfect design makes the handlebar adjust in a perfect position. Made of high quality 3K carbon fiber. Super lightweight performance and hight strength. With awsome special carbon fiber grain decor, make your bike charming. Front fork hole size: 28.6mm. Handlebar hole size: 31.8mm. Quantity: 1pcs