Package includes 6 sizes of spacers, they are 1 mm, 2 mm, 3 mm, 5 mm, 10 mm, 15 mm, 2 pieces of each size. You can match them to any height you want.
The Spacers are made of carbon fiber, lighter weight, more resistant to high temperature, corrosion and friction.
This carbon fiber spacer has an excellent quality, attractive and durable, and convenient to carry and use.
The inner diameter of the spacer is 28.6 mm and the outer diameter is 34.9 mm, suitable for most bicycles.