Will also fit most Petrol machines with Polycut heads fitted. Fits STIHL models; FS38, FS40, FS50 C-E, FS55R FS56 RC-E, FS56 C-E, FS70 RC-E, FS70 C-E, FS90, FS90R, FS100, FS100R, FS94 RC-E, FS94 C-E, FS130, FS130R, FS240 C-E, FS240 R-CE, FS360 C-E, FS410 C-E, FS560 C-EM.