WHD 7771 DUAL MAS CYL 3/8MPTF X 5/16F INV FLARE

Dual Master Cylinder Adapter. The tube OD is the outside diameter of the steel brake line. | Used to adapt standard steel brake lines to different size ports used in dual master cylinders. | Option of standard and long nut. | Thread size can be determined by measuring with a US or metric screw pitch gauge.