Adaptation: This bike stem riser extender fits most 1 1/8 inch (28.6 mm) bikes, please make sure your bike stem and fork steerer tube diameter is 1 1/8 inch (28.6 mm) and that the handlebar is detachable from the bike body
Features: This bike stem riser extender has a variety of sizes to choose from, you can freely choose according to your height, raise the height to your comfortable position, can reduce the pressure on your lower back
Easy to Install: This bike stem adapter is easy to install, just put the stem extender on the steerer tube and tighten it, you can adjust the number and type of spacers according to your height