Usage Tips:Features: 1.The function is to insure the proper proportion of the load of the front and rear wheels during driving and to insure that the rear wheels do not lock up during emergency braking. 2.This adjustable proportioning valve is designed to be installed in the brake line, in order to adjust pressure in the brake system to keep the brakes from locking or engaging too soon. 3.Enhances control under braking, greatly aids turning, a must?have tool for all race car. 4.Universal to most car and for professional motorsport, practical to use. 5.Large knurled knob for adjusting to your specifications, 150PSI?1200PSI pressure range suitable for motorsport use. 6.Advanced manufacturing technology, has high reliability and stable performance. Specification: Conditon: Item Type: Brake Proportioning Valve Material: Aluminium Alloy Color: As Pictures Shown Fitment: Universal fitment for car modification Connector Size: 1/8NPT Pressure Range for Racing Use: 150 psi-1200 psi