This adjustable stem is made of 6061 aluminium alloy, which is durable and solid for long term use.It can effectively increase the height of the handlebar to release the waist pressure.It features fine workmanship with 3D forging and CNC finishing process, not easy to deform.Item Name: Adjustable StemMaterial: 6061 Aluminium AlloyRise: 0 Degree - ±85 DegreeProcess: 3D Forging, CNC FinishingFeatures: Durable, Easy to Install, Cycling PartInstall Height: 35mm/1.38" (Approx.)Handlebar Hole Diameter: 31.8mm/1.25" (Approx.)Length: 90mm/3.54", 110mm/4.33" (Approx.)Max Increase Height: 5cm/1.97" (90mm Length), 7cm/2.76" (110mm Length)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Adjustable Stem