Suitable for the following Stihl Machines: BT 45, FS 38, FS 45, FS 45 C, FS 45 L, FS 46, FS 46 C, FC 55, FS 55, FS 55 C, FS 55 R, FS 55 RC, FS 55 T, KM 55, KM 55 C, KM 55 R, KM 55 RC, HS 45, KM 55, KM 55 C, KM 55 R, KM 55 RC, FS 55, FS 55 C, FS 55 R, FS 55 RC, FS 55 T, FS 38, FS 45, FS 45 C, FS 45 L, FS 46, FS 46 C, HL 45