The S.U.R. & R. Fluid Line Stopper Kit, No. FLS330, is designed to stop the mess when replacing fluid lines. It can help make line repair work easier and cleaner to perform.This kit features a cone-shaped tip and the spring-loaded stoppers lock into place to plug the line. Leaking ends and fluids are kept safe from the risk of contamination. Included within the kit are four stoppers, which can be used to plug lines 3/16" to 1/2" as well as those using a banjo-style connection. The stoppers are also available for purchase individually.