FIRSTINFO Banjo , 3/8&rdquo;, 5/16&rdquo;, 1/2&rdquo; Auto Steel Line Stopper Kit for splitting a brake line and prevent brake fluid leaks. Auto steel line stopper kit-- Help customers to split a brake line without mess of brake fluid. To prevent fluid leaks and contamination. Easy to use--Use to plug steel lines once disconnected. Specification-- banjo, 3/8", 5/16", 1/2". Widely use-- Perfect for line repairs like brake, transmission cooler line, A/C, fuel, etc.... Use with any automotive fluid. Quickly to install --Spring loaded design installs in seconds.