Made from high quality aluminum and are 31 splined.
Features one each .50", 1.50", 2.50", 3.50" straight spacers and 1.25", 1.75", 2.75", 3.75" tapered spacers.
Black anodized.
WARNING: These products may contain a chemical known to the state of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65warnings.ca.gov. 