This 15 in. String Trimmer with POWERLOAD? technology automatically winds your trimmer line. Replacing your string line is as easy as feeding the line into the head and pressing a button! With the telescopic aluminum shaft, easily adjust the shaft length for ease of use and comfort. This trimmer is built with a high-efficiency brushless motor, bump feed line advance, 0.095" professional cutting line, and is compatible with all EGO ARC Lithium? batteries to maximize the convenience of cordless and deliver Power Beyond Belief. POWERLOAD? technology; load your line, push a button and go Get up to 45 minutes of run time on a single charge with the included 56V 2.5Ah ARC Lithium? battery Telescopic aluminum shaft High-efficiency brushless motor 15? cutting swath Professional-grade, dual line spiral-twist 0.095 in line Variable speed with 2-speed settings 50-Minute charge time with the included 2.5 Ah ARC Lithium? battery and POWER+ charger Compatible with all EGO 56V ARC Lithium? batteries