Genuine Husqvarna 578446501 T35X Tap 'N Go String Trimmer Head 10mm In Stock · Replace Drive Sprocket Bearing 248 604 111 · Replace Drive Sprocket Bearing When Changing Your Rim and Drum or Spur Sprocket System 954 04060A Brand New Genuine Husqvarna T35x String Trimmer Head…· Exclusively designed by Husqvarna the T35X trimmer head features a semi automatic line feed system Tap 'N Go and ball bearing resting surface· Features developed for users with high demands on durability and minimised downtime· The trimmer line is fed automatically when the head is pushed into the ground· This means that the user always controls when the line is fed and the line can be fed while working with the machine· Genuine Husqvarna Part # 578446501