Bike Bicycle Bottom Bracket Spacer Cassette Aluminum Alloy Flywheel Hub Washer Bottom Bracket Spacer Features: *Sturdy Material:Made of lightweight anodized aluminum, these bike bicycle bottom bracket spacer cassette aluminum alloy flywheel hub washers are designed for long-term use. *Reliable and Optimal Performance:These washers ens-ure good symmetry with minimal effort, allowing for safe and efficient cycling. *Function:The bike speed cassette washer solves multiple problems, including adjusting the tooth plate distance from the frame and keeping the crank away from touching the frame. *Lightweight and Compact:The lightweight and compact design of the bicycle bottom bracket washer makes it convenient to carry in your backpack for somesituations. *Package Content:You will receive 1 piece of quick-acting box-type bicycle washers, available in multiple sizes for your specific needs. Specifications: *Product Name:Bike Bicycle Bottom Bracket Spacer *Material:AluminumAlloy *Size:Approx.1 x 24mm,2 x 24mm,3 x 24mm,1 x 30mm,2 x 30mm,3 x 30mm,2 x 29mm,4.5 x 29mm(Optional) *Color:Black Package Content: 1 * Bottom Bracket Spacer Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. _x000D_ _x000D_