AISEN Air Filter + Spark Plug + Fuel Filter for STIHL FS50 FS56 FC56 FC70 KM56 Trimmer Fit models: stihl FS40 FS40C FS50 FS50C FS50-L FS56 FS56R FS56C FS56RC FS70 FS70C FS70RC FC56C FC70C KM56 KM56R KM56C KM56RC HT56C trimmer Package include: 1 air filter, 1 spark plug, 1 fuel filter