40 contact with the tooth side which minimizes the risk of the belt slipping.
Made of Aluminum Alloy; Adopt surface oxidation treatment, anti-Rust and Anti-corrosion effectively.

*Store Introduction & Service：
Our store first priority is customer satisfaction.
If you have any questions about the product, please feel free to contact us. We will be the first time to help you solve the problem.

* Note:
Due to manual measurement and production batch is not the same, the size, weight, color, there will be some error, the error is within 5% of the normal case. (Please make sure you don't mind before ordering.)