ITEM NAME:Mountain Bike MTB Handlebar Fork Stem Riser Increased Control Tube Adapter A#S Product Description Description: Mountain Bike MTB Handlebar Fork Stem Riser Increased Control Tube Extender Rise Up Extension Heads Up Adapter Features: 1. Manufacture of high strength aluminum alloy. 2. Suitable for mountain bikes to lift the forks. 3. You can extend the maximum 70 mm of the stem. 4. Easy to install, just connect the original front fork. Specifications: Base diameter: 1/8 (28.6mm) Diameter of the fork: 28.6mm/1.12'' (standard) Size: about 12cm/4.68'' Material: aluminum alloy Colour: Black Notes: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item.Thanks for your understanding. Included: 1 x Handlebar Fork Stem Riser.Included: 1 x Handlebar Fork Stem Riser. You can extend the maximum 70 mm of the stem. Easy to install, just connect the original front fork. Suitable for mountain bikes to lift the forks. Manufacture of high strength aluminum alloy.