Auto Feed Tap Head Trimmer 10mm Dual Line For Husqvarna T35 531300194 Special material , high quality plastic and metal ,and 30% nylon Easy to reload spool with the cap, eliminating the need to turn the trimmer upside down to reload the line Two key slots to lock the trimmer line Speed is fast, up to 13300rpm (max) Fits: 123, 125, 223, 225, 232, 235, 322, 323, 324, 325, 326, 327 Models, 324 LX (2004-05),343 F (2004-08),343 R (2004-08),345 FX (2004-08),345 FXT (2004-08),345 RX (2004-08),323 L,323 R