Specifications: Made of aluminum alloy, it has high hardness and corrosion resistance. The surface is treated with anode sandblasting process, the overall hardness and feel are greatly improved, and it is not easy to accumulate dust. It is easy to install, and just need to connect the original front fork rod. This product is suitable for most bicycles with split handlebars. The operation is more flexible, light weight, easier to apply force when climbing, and comfortable to use. Type: Stem Riser Material: Aluminum Alloy 6061-T6 Specifications: 01: 11.5cm x 2.86cm, 02: 18cm x 2.86cm, 03: 21cm x 2.83cm Features: Extension, Durable, Solid Size: 01: 11.5cm x 2.86cm/4.53" x 1.13" (Approx.) 02: 18cm x 2.86cm/7.09" x 1.13" (Approx.) 03: 21cm x 2.83cm/8.27" x 1.11" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Stem Riser