Brake Proportion Valve Adjustable Fit For Car Prop Brake Proportion Valve Enhance your vehicle's braking system with this adjustable valve knob, allowing you to customize your driving experience. Improve safety and control on the road by adjusting the brake bias to suit your specific driving conditions. The cylinder oil separator breather valve keeps a low level of pressure in the pipeline by stopping fluid from flowing backward to the master cylinder. Fabricated from tough plastic, it is immune to rust and damage, providing a lengthy service period., Manufacturer: ZTAWWCJ