• Replacement trimmer head with 0.080" string for stihl battery trimmer FSA 57
• You need to check the serial number of the FSA 57. Only fits FSA 57 trimmers starting with serial number 5XXXXXXXX.
• Replace OEM Parts No: 4009 710 2106
• Replacement C3-2 trimmer head for mowing and thinning work. Tap the mowing head to automatically adjust the trimmer line, refill the cutting line from the outside without opening the housing
• Uses the green 2 mm nylon line. It is really easy to refill the Nylon with the easy fit replacement spools

Shipping Note: Shipping to Alaska, Hawaii, PO Boxes, and APO addresses is not available for this item

Warranty: 90 Day Woot Limited Warranty