Size: .75 Oz.Color: BlueDesigned To Be Used With Body Fillers, Bondo-Glass, Bondo-Hair And Fiberglass Resin JellySpecially Formulated And Packaged Under Temperature Controlled Conditions That Assure Freshness And Maximum PerformanceRed Color Hardener Provides A Color Change When Mixed With Bondo Filler Or Other White Auto Body FillersColor Change Helps Determine When Mixing Is Complete