Prevent fluid leaks and contamination during service. Simply slide the appropriate stopper around the tube nut or banjo head and release. The spring-loaded plunger will seal around the fitting and prevent leaks.
BQ408 8-piece line stopper kit has a clam-shell case. (The top of the case has been removed for the picture.)
The BQ407 stopper kit does not include a case.
Note: the 5/16″ stopper in the BQ407 kit is also suitable for 3/16″ and 1/4″ lines.