Features:
This trimmer head is an aftermarket replacement for the Autocut 25-2, 4002 710 2191, and 4002 713 9608.
"STIHL FS80 FS81 FS85 FS86 FS87 FS100 FS106 FS108 FS110 FS120 FS130 FS200 FS250 Trimmer Weedeater
Autocut 25-2, 4002 710 2191, and 4002 713 9608.
FS 44, 55, 56, 70, 80, 83, 85, 90, 100 RX, 110, 120, 130, 200, 250
KM 55, 56, 85, 90, 110, 130
FR106, FR108, FS44, FS44J, FS44R, FS48,
FS50,
FS50E, FS50F, FS51, FS51AVE, FS52,
FS52AVE,
FS52AVRE, FS55, FS55R, FS56,
FS56AVRE, FS60,
FS61, FS61AE, FS61E,
FS62, FS65, FS65AVE,
FS65AVRE, FS66,
FS62AVE, FS62AVRE, FS66AVE,
FS66AVRE, FS74, FS74AVE, FS74AVRE, FS76,
FS76AVE,FS76AVRE, FS80E, FS80RE FS81,
FS81AVE, FS81AVRE, FS83, FS83R, FS85RT, FS86,
FS88, FS90, FS90AVE, FS91, FS106AVE,
FS86AVE, FS86AVRE, FS96, FS106, FS108,
FS120,
FS120R, FS350, FS450K, FS550 and FS550K"
NOTE; It doesn't work with FS90R, f250
Specification:
Easy to reload trimmer line,and the pitch is only fit for the stihl model series
Type :Split spool Slotted eyelets
Built to strict quality control standards
diameter 12cm
Weight:0.34Kg
What is included: 1 head with nylon string 
Shipping and Handling:

  • Fast N FREE USPS Priority Shipping
  • Items will be shipped out within 48 hours after payment cleared.  VIa USPS First Class Mail
  • Return / Refund
    Return is accepted within 30 days after the buyer's receiving the item.
    If this item is defective upon receipt, customer has up to 30 days from date of receipt for exchange of a new one. 
    Include your name, address, item, daytime telephone, how you paid, and if you are requesting a refund or exchange.
    After getting the returned item, we will refund the customer at the item's price ( excluding the shipping costs to and from).