Application: Chrysler. Used in conjunction with CTA 7024 to close hole on 2-hole master cylinder. O. D. = 51. 5mm, I. D. = 43. 5 mm. Included in 11 Pc. Master Cylinder Adapter Kit - CTA 7300. California Prop 65 - Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.