2 pcs. Veil; residual metal veil; Residual brake pressure reversal universal for racing cars 1. Application: Savoy; Residual r is used on disc drum brake lines to hold 2 lbs and 10 lbs; in line pressure, modification of the car universal. 2. Feature: Veil; residual pressure prevents the return flow of fluid into the cylinder head; and maintains a small amount of line pressure. 3. Premium Material: Veil; The residual brake pressure check is made of high-quality metallic material, rust-resistant, high-strength, sturdy and durable. 4. Strict standards: built according to quality control standards, connector size is 3/8-24nt and 1/8-27nt, stable performance and high reliability. 5. Easy installation: easy to install, direct replacement for old or broken, convenient to use, save time and energy. Specification:Item Type: Would; pressure r