* High-quality Material-- Our bike cassette spacers constructed of aluminium alloy, the brand new gasket is anti-rust, long service life.
* Easy to install-- The bicycle speed cassette freehub spacer is lightweight and portable, easy to install and remove quickly, time saving, your best choice.
* Good performance-- Our bike headset spacer perfect for adjusting your bike bottom bracket, flywheel or hub, 3 sizes included, meet your needs.
* Wide application-- Our bike headset spacers suitable for mountain bike, road bike, widely applied.
* Satisfaction Guarantee-- If you are not satisfied with our product received, you can apply for unconditional return within 180 days.