Features: Made of high-quality aluminum alloy, the surface is anodized, strong and wear-resistant, not easy to rust. Maximum extension height: 122mm/4.8in, including 4 gaskets: 1x20mm, 2x10mm and 1x5mm, you can freely adjust the height. It helps you lift the handlebars for a nice riding position, reducing pressure on your back, neck and wrists for a more comfortable ride. More flexible handing, lightweight, and operation is comfortable. Easy to install and use, fits 28.6mm(1-1/8 inch) diameter fork stems. Specifications: Color: Black Material: Aluminum Alloy Adjustable Height: Max. 4.8 inch (122mm) Fork Stem Diameter: 1-1/8 inch(standard) Item Weight: 130g/ 4.6oz Package Size: 130 * 35 * 30mm/ 5.1 * 1.4 * 1.2in Package Weight: 150g/ 5.3oz Packing List: 1 * Stem Riser Set