This is a new brass Disc Disc Proportioning Valve with Lines & Bracket for universal applications. Part # PV2, Side Bracket, + 1/2" and 9/16" Lines. Comes with compatible disc/disc proportioning valve kit (self adjusting valve, pre-bent lines for 1/2" and 9/16" master cylinder ports, bracket to mount kit to the side of the master cylinder, and bolts) The proportioning / combination valve performs all of the necessary valving functions with a disc brake conversion⦠Proportioning: .