Powerful backpack blower. With very high air throughput for the most extensive cleaning tasks. Superb power to weight ratio. Excellent anti-vibration system and ergonomic carrying frame. Innovative 4-MIX® engine for a more pleasant sound, low fuel consumption and low emissions. STIHL 4-MIX® engineYou can always rely on STIHL to keep setting new benchmarks this time with 4-st