describe: Name: Stem Growers Material: aluminum alloy Length: 115mm/4.53", 180mm/7.09", 210mm/8.27" (approx.) (optional) Width: 28.6mm/1.13", non-removable Length: 70mm/2.76" (approx.) Compatible with: Most bikes with split handlebars feature: The bicycle stem is light, easier to bear when climbing, and comfortable to operate. The riser is free to adjust the spacer to suit your height. Installation is simple, just attach the original fork stem. The package includes: 115MM height booster or 180MM height booster or 210MM height booster (according to your choice) hint: Due to different lighting and shooting angles, the color of the item may be slightly different from the picture. Please refer to the actual product. Make sure you don't mind before bidding. Please allow 1-5mm difference due to manual measurement.