Rotary 9774. PLUG-ALL & VACUUM & FUEL LINE STOPPERS. STEPPED DESIGN PLUGS FIT ALL 1/8", 3/16", 1/4", 5/16", 3/8" & 1/2" HOSES. TAPERED CAPS CLOSE TUBES FROM 1/8" TO 1/2". GREAT FOR USE DURING TUBE-UPS.