HIPA (Pack of 5) Trimmer Head Spring Autocut 25-2 for STIHL FS55 FS70 FS76 FS80 FS100 FS85 FS120 String Trimmer For STIHL Autocut 25-2 trimmer head Qty: 5 x trimmer head spring Length 1-15/32" x Diameter 19/32" Please measure your spring size before purchase