3/16" wide stepped steel birdcage spacer for sprint car rear ends with splines next to the birdcage.
3/8" wide overall with 3.25" O.D. x 2.76" I.D.
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.