About this item Specification:the total length of Bike Fork Stem Extender is 160mm,and the upper diameter is 28.6mm,the lower diameter is 25.4mm Material:Front Fork Hanging Core made of long-lasting aluminum alloy, is sturdy,polished and anodized, strong, safe and durable,which can be used for a long time Easy 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 thread Application:Mountain Bike Handlebar Stem Higher is suitable for most bicycles with a 28.6mm unthreaded steerer tube,which is suitable for most bikes Working principle:Bicycle Front Fork Adapter increases the height of the handlebar by increasing the height of the stem Features: 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 Including 1*Front Fork Hanging Core