Description: High quality, anti-rust and long lasting. Easy installation, just connect up the front fork stem. Add height to handlebars without buying new stem or bars. Equip with 4 gaskets, 3 x 10mm and 1 x 5mm. can increase the height up to 70mm. You can freely adjust the gasket to fit your own height. Specification: Material: Aluminum Alloy Total Length: Approx. 115mm / 4.5inch Inner Diameter: Approx. 28.6mm / 1.13 inch Fit Fork Stem Diameter: 28.6mm (standard) Adjustable Height: 0mm - 70mm / 0inch - 2.8inch Package Includes: 1 Piece Bicycle Fork Stem Riser