Usage Tips:Mountain Bike Handlebar Front Fork Stem Riser Extender Extension Head Up Adaptor Mountain Bike Bicycle Handlebar Fork Stem Riser Features: - This Mountain Bike Bicycle Handlebar Fork Stem Riser made of high-strength aluminum alloy, anti-corrosion, non-deformation, and durable for long time use. - The Mountain Bike Bicycle Handlebar Fork Stem Riser can freely adjust the gasket to fit your own height. - The Mountain Bike Bicycle Handlebar Fork Stem Riser easy installation, just connects up the front fork stem. - This Mountain Bike Bicycle Handlebar Fork Stem Riser suitable for mountain bicycle to rise up the handlebar fork stem. How to Install: 1. Insert STEM-UP onto the fork stem and place height adjusters onto STEM-UP until your preferred height level for your stem. 2. Stem and wheel in the same direction and heighten clamping bolts of the stem. Mountain Bike Bicycle Handlebar Fork Stem Riser Specification: Type : Mountain Bike Bicycle Handlebar Fork Stem Riser Mountain Bike Bicycle Handlebar Fork Stem Riser Material : Aluminum Alloy Mountain Bike Bicycle Handlebar Fork Stem Riser Base Diameter : 1 1/8" (28.6mm) Mountain Bike Bicycle Handlebar Fork Stem Riser Dia : 28.6mm (standard) Total Height : 120mm; 138mm (heighten style) Mountain Bike Bicycle Handlebar Fork Stem Riser Adjustable High : 70mm/100mm Mountain Bike Bicycle Handlebar Fork Stem Riser Adjuster : 4 spacers Package Includes: 1 x Bicycle Extender