Feature:1. Aluminum Alloy Material: Made of high quality aluminum alloy material, anti rust and corrosion resistant, sturdy and durable, long service life.2. Wide Range of Application: Our bicycle headset spacers are widely used in mountain bikes and road bikes, having a wide range of applications.3. Easy to Install: Bicycle hub spacers are lightweight and portable, easy to install and quick to remove, time saving, is your best choice.4. Direct Replacement: You can directly replace the old or damaged parts to obtain higher strength, no need to replace frequently.5. Good Workmanship: Exquisite workmanship, beautiful appearance, small portable size, providing you great using experience.Specification:Item Type: Bike SpacerProduct Material: Aluminum AlloyProduct Style: Approx. 2.35mm / 0.09inWeight: Approx. 8g / 0.3oz Package List:1 x Spacer 1 x Storage Box