●Aluminum Alloy Material: The brake proportioning valve is made of strong, durable, high strength and structurally stable high-quality aluminum alloy, providing excellent durability and reliability. ●Reduced Risk of Locking up: The adjustable proportioning valve is designed to be installed in the brake line, in order to adjust pressure in the brake system to effectively prevent the brake from locking up or engaging prematurely, improving driving safety. ●Precise Adjustment: Brake line proportioning valves large knurled knob allows you to adjust the pressure as needed, ranging from 150PSI-1200PSI, suitable for motorsports use. ●Appropriate Front and Rear Load Ratios: Brake adjustable proportioning valve ensures that the front and rear wheels are properly loaded during driving or emergency braking to enhance driving stability and avoid rear wheel lock-up. ●Essential Tool: The adjustable disc brake proportioning valves metal push button valve not only enhances braking control, but also greatly aids steering, making it an essential tool for all motorsports and most automobiles.