Bicycle headset adapter for stem height adjustmentAbout this item<br> Specification:the total length of Bike Fork Stem Extender is 160mm,and the upper diameter is 28.6mm,the lower diameter is 25.4mm<br> 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<br> 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<br> Application:Mountain Bike Handlebar Stem Higher is suitable for most bicycles with a 28.6mm unthreaded steerer tube,which is suitable for most bikes<br> Working principle:Bicycle Front Fork Adapter increases the height of the handlebar by increasing the height of the stem<br> Features:<br> Front Fork Hanging Core<br> -Color:Black.<br> -Material:Aluminum alloy.<br> -Size:Upper Diameter:2.86cm /1.1 inch.<br> Lower Diameter:2.54cm /1 inch.<br> Total Length:16cm /6.3 inch.<br> Notes:<br> Due to the light and screen setting difference, the item's color may be slightly different from the pictures.<br> Please allow slight 1-3cm dimension difference due to different manual measurement.<br> Package Including<br> 1*Front Fork Hanging Core