This is Husqvarna's T35X trimmer head that features a semi-automatic cord feed system “Tap’n go“ and ball bearing resting surface. Features developed for users with high demands on durability and minimized 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. Clamshell Package T35X - Ball Bearing Tap Advance Button Fits the following Husqvarna models: 122LDx, 123L, 123LD, 125L, 128L, 128LD, 128LDx, 129L, 129LDx, 129DJx, 223L, 224L, 225L, 225LD, 225R, 225RJ, 232L, 232R, 235RJx, 240L, 322L, 322R, 323L, 323LD, 323R, 323RJ, 324Lx, 324LDx, 324Rx, 325Lx, 325LDx, 325Rx, 325RDx, 325RJx, 326L, 326LS, 326Lx, 326LDx, 326Rx, 326RJx, 327LS, 327RJx, 329LDx, 426LST, 430LS, 525LS, and 525LST
