Dual master cylinder, 7/8" bore. This is an upgrade to the standard brake system. Dual cavity master cylinders provide additional safety to the brake system, 61-64 Thunderbird, 67-72 Galaxie or LTD, 67-72 Country Squire Wagon, 68-72 Customline, 67-71 Mercury
WARNING This product can expose you to chemicals including benzene which is known to the State of California to cause cancer, birth defects or other reproductive harm. for more information, visit: www.p65warnings.ca.gov.