Designed to mount on Wilwood's Tandem Master Cylinders (260-8555, 260-8556, 260-9439, etc), as well as several other similar tandem cylinders. You can scroll to the bottom to see it mounted on one of those cylinders.
Wilwood Adjustable Combination Proportioning Valve w/ Bracket & Lines 260-13190
Wilwood Style Knob Adjustable Combination Proportioning Valve 260-11179
Wilwood Style Knob Adjustable Combination Proportioning Valve With Brake Line
Wilwood 260-11179 Aluminum/Steel Knob Adjustable Combination Proportioning Valve
Wilwood Aluminum/Steel Knob Adjustable Combination Proportioning Valve 260-11179