Application: These Bike gaskets can be used on mountain bikes and road bikes for a wide range of applications. The bike speed cassette washer is suitable for adjusting your bike bottom bracket, BB axis, flywheel or hub
Function: You need to use the bike speed cassette washer to adjust when the the tooth plate of your bike touches the frame or the crank touches the frame, the central shaft needs to be equipped with a speed cassette washer when the front shift gear can not come down
Size: Thickness: approx. 1.9mm / 0.1in, External Diameter: approx. 40mm / 1.5in, Inner Diameter: approx. 34.7mm / 1.3in, Lightweight and easy to install and remove
Bike Spacer: The bike flywheel hub spacer is made of high quality Aluminium Alloy material for lightweight and high hardness, can be used for a long time
Easy to Use: These bike washers are easy to install and remove, no complicated operating are required. 3 different color fits for your demand, meets different needs
Colour: Silver