Features 1.Manufacturing Material: Made of high quality aluminum alloy material, rustproof and corrosion resistance, sturdy and durable, long service life, no need to change often. 2.High Accuracy: Bicycle flywheel cassette spacer, grooves pricisely machined to exact tolerance for reducing vibration in rotation, protect other parts. 3.Ideal Cycling Accessories: Perfect for adjusting your bike bottom bracket, flywheel or hub. Small size, compact and easy to carry. 4.Simple Operation: Hub gasket is lightweight and portable, easy to install and quick to remove. Gaskets are widely used for mountain bikes and road bikes. 5.Easy to Use: Easy to use and fine workmanship. Without any difficult requirements even though you use it for the first time. Specification Item Type: 1.5mm Bicycle Hub Washer Weight: Approx.7g / 0.2oz Material: Aluminum Alloy Product Size: Approx.1.5mm / 0.06in Product Application: Fit For HG Base And Flywheel Package List 1 x Gasket 1 x Storage Box