Speed Feed 400 Trimmer Head for Echo SRM225 GT225 PAS225 SRM210 SRM2100 SRM230..

Compatible for Echo GT225 GT200 GT225i GT230 GT251 GT100 GT140 GT160 GT1000 GT1100 GT2000 GT2100 GT2101 GT2102 GT2103 GT2200 GT2301 GT2400. Note: IF You model is GT225, You need the 8mm x 3/8-24 RH Black Bolt.