The BR 600 MAGNUM® professional backpack blower is one of the cleanest-running in its category, thanks to a fuel-efficient, low-noise STIHL® 4-MIX® engine delivering increased durability and longer life. It offers an impressive power-to-weight ratio with many enhancements including a new nozzle with extended wear area to prolong equipment life, and a specially designed nylon harness for high wear resistance. This is the most powerful backpack blower for the landscaping professional.