HIPA Autocut dual line tap feed Trimmer Head 10mm x 1.0 LHF for STIHL FR106 FR108 FR130T FR350 FT100 FS44 FS55 FS62 FS65-4 FS66 FS72 FS74 FS76 Trimmer Weedeater Autocut dual line tap feed 25-2 Replace manufacturer part number: 4002 710 2191 Uses .080" .095" or .105" line Make sure your trimmer head thread size is 10mm x1.0 LHF before placing an order