Buckbock Speed Feed 400 Trimmer Head for Echo SRM 225 SRM210 SRM230 SRM250 SRM251 SRM260 SRM261 PAS210 PAS225 PAS230 PAS260 Shiandaiwa T195S T220 T222 T230 T231 Trimmer Bump Feed

Echo Trimmer Head Replacement for Speed feed 400;Trimmer head adapter size 10mm x 1.25mm LHF ;Diameter is 3-3/4 inch.. SRM 225 Trimmer Head Fits Shiandaiwa T195S T220 T222 T230 T230s T231 T242 T242X T2510 T2510X 22T C230 C242 C2510.（You need7mm x 10mm (LH) Mounting Stud (Gold)）. Echo weed eater head Fit for ECHO PAS210 PAS211 PAS225 PAS225VP PAS225VPB PAS230 PAS231 PAS260 PAS261 PAS265 PAS266 PAS280 PAS2100 PAS2400 PAS2601 power source attachment.. Echo Speed Feed 400 Fit for SRM 210, SRM 225, SRM 200, SRM 230, SRM 250, SRM 265, SRM 266, SRM 280, SRM 2100, SRM 2400.You need 10mm x 1.25 LH Long Bushing (Silver). Formal Product Description:The mounting nut for this trimmer head is interchangeable. In case of compatibility issues, the original nut can be detached from the old trimmer head and reassembled onto the new one.. We kindly reminder Note: this speed feed 400 trimmer head DON'T work on ECHO GT series trimmer,This Head Doesn`t Come With Adapter. that you need confirm your engine's model and part numbers before making your purchase.