Carbon Fiber 3K MTB Road Track Bike Racing Drop Integrated Bar Stem Handlebar 400/420/440mm Material: T800 carbon fiber Width: 400,420,440mm; Steerer Tube Diameter: 1-1/8 in=28.6mm Weight: 37020g(approx,different size, different weight.) Length of stem: 90mm, 100mm, 110mm, 120mm