Ultimate Mulching Performance - Unique mulching blade-disc design generates air-circulation beneath the mower continually cutting the grass - creating a fine mulch! Ultimate Catching Performance - Quad-blade cutting system delivers a cleaner cut & improved catching in thick, wet grass. ReadyStart™ Technology - Starting made easy! No Prime, No Choke, Smooth Pull-Start! Powered by U.S. built Briggs & Stratton quiet, powerful and efficient 4-stroke OHV 550EX Series™ engine. Victa Design Durable Soft-Grip Comfort Handles.