Get great value with the STIHL® FSA 57 Lithium-Ion trimmer. A lightweight, battery-powered trimmer, is an ideal choice for maintaining suburban yards. This trimmer cuts an 11 in swath at a continuous high-speed, saving time and doing more with a STIHL® AK Series battery. With an AK10 battery, the trimmer weighs just 7.5 lb and has a runtime of up to 20 min on a single charge. 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.