Bicycle Bike Black Handlebar Fork Stem Riser Head Up Adaptor Extend Extension

ITEM NAME:Bicycle Bike Black Handlebar Fork Stem Riser Head Up Adaptor Extend Extension.Stem Riser Size: Approx. Installed in the middle of the handlebar and front fork. 1x Handlebar Stem. Convenient to use with handlebar height adjustable. 4x Stem Adjuster. Suitable for bibycle, mountain bike, BMX, folding mat car.