Features:1. The new narrow-wide teeth design increases chain retention, wear life, and reduces friction and noise.2. Each of the teeth can be fully inserted into the chain, increase the grasp force, make you no longer worried about the chain dorpped, easy to pass through the bumpy road.3. High strength aluminum alloy secures intensity and safety.4. Not easy to break or rust, which is sturdy enough to stand the friction of your bike chain and can transmit the motion and the dynamic force.5. Ultra-light plate with high strength, great parts for folding bicycle. Exquisite workmanship, exquisite carving.Notice:*Actual color may be slightly different from the image due to different monitor and light effect*Please allow 1-3cm deviation due to manual measurementDescription:Size: As the picture shown Package List:1 x Bike Round Oval