The STIHL FSA 57 Lithium-Ion trimmer is a lightweight, battery-powered trimmer.  It is is an ideal choice for maintaining suburban yards.  This trimmer cuts an 11″ swath at a continuous high speed, saving time and doing more with a STIHL AK Series battery.  For comfort and convenience, this unit features an adjustable shaft to customize height to the user, an easy-to-use AutoCut head which feeds noise-reducing line, and a bump guard to help the user trim carefully around obstacles like trees and shrubs.