About this itemSpecification:the total length of Bike Fork Stem Extender is 160mm,and the upper diameter is 28.6mm,the lower diameter is 25.4mmMaterial:Front Fork Hanging Core made of long-lasting aluminum alloy, is sturdy,polished and anodized, strong, safe and durable,which can be used compatible a long timeEasy to use:Bike Quill Stem Riser Adapter is easy to use,just connect the original fork rod,and convert the threaded sleeve setting to no threadApplication:Mountain Bike Handlebar Stem Higher is suitable compatible most bicycles with a 28.6mm unthreaded steerer tube,which is suitable compatible most bikesWorking principle:Bicycle Front Fork Adapter increases the height of the handlebar by increasing the height of the stemFeatures:Front Fork Hanging Core-Color:Black.-Material:Aluminum alloy.-Size:Upper Diameter:2.86cm /1.1 inch.Lower Diameter:2.54cm /1 inch.Total Length:16cm /6.3 inch.Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight 1-3cm dimension difference due to different manual measurement.Package Including1*Front Fork Hanging Core