Stereer Tube diameter : 28.6mm (1-1/8"), Handlebar Diameter: 25.40mm (1-1/4"), Length center to center : 60mm, Weight: 178g, Degree: 8°, Fit for handlebar diameter 25.40mm, please check your handlebar size and choose right model accordingly. The fork post tube fitting diameter is 28.60mm which is standard in most cycles. Easy installation, just connect up the original front fork stem. Four bolt bar clamp holds bar securely in position. Universal handle bar stem suitable for most road bike, fixed gear bicycle, mountain bikes, downhill bike, track bike, MTB, BMX, DH, etc.Constructed of high-strength aluminum alloy, fine workmanship. Black Gloss powder coated for long life and anti oxidation, GOOD QUALITY :made of Full CNC forged and machined 6061 aluminum construction, This bicycle handlebar stem has passed extensive life and ultimate strength tests, durable and long life time guarantee.