Brake Proportioning Valve Adjustable Knob Style Fit For Wilwood WB260-8419 With BoltSpecifications Adjustment Style: Knob Outlet Size 1 (in): 1 8 27 NPT Outlet Fit 1 (in): 3 8 24 IF Female Outlet Quantity: One Outlet Attachment: Female threads Outlet Size: 1 8 in. NPT Inlet Size (in): 1 8 27 NPT Inlet Fit (in): 3 8 24 IF Female Inlet Quantity: One Inlet Attachment: Female threads Inlet Size: 1 8 in. NPT Minimum Pressure (psi): 100 psi Maximum Pressure (psi): 1,000 psi Pressure Reduction (%): 57 percent Proportioning Valve Finish: