The SC5627B Chipper/Shredder/Blower is powered by a 627cc Briggs & Stratton Vanguard® engine. The 121 lb. rotor turns 2000 rpm at full throttle. This Chipper/Shredder uses four reversible chipping blades and thirty-six shredding knives to provide the most efficient method of turning branches and leaves into nutrient rich, user ready product.