PREMIUM: Constructed with high strength CNC machined 6061 aluminum alloy. The anti-corrosion, anti-rust and long lasting HEIGHT ADJUSTABLE: You can extend increased the 18cm for fork stem maximumly. Include 6 gaskets, 2 x 20 mm (4/5 inch), 3 x 10 mm (2/5 inch) and 1 x 5 mm (1/5 inch). Can freely adjust the gasket to fit your own height UNIVERSAL SIZE: Suitable for mountain bicycle rise the handlebar fork stem EASY TO INSTALL: The plunger diameter is 28.6 mm, just connect the original front fork stem COMFORTABLE FEELING: Add height, Flexible maneuvering and less load favor, help you to increase the comfortable feeling while drivin 1