Features: brand new and high quality High strength aluminum alloy material makes it more solid. Exquisite workmanship,it is professional and simple. Suitable for Most MTB,road bike,folding bike,fixed gear bicycle,etc. Wear resistant and shock resistant and simple to install. If you have any questions or concerns, please contact us. Specifications: Material: Aluminum Alloy Length: 60mm 70mm 80mm Handlebar Center Diameter: 31.8mm (1-1/4") Stereer Tube Diameter: 28.6mm (1-1/8") Note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x MTB Bike Stem.