Poulan Pro 961320098 PR550N21RH3 Briggs 550ex Side Discharge/Mulch/Bag 3-in-1 Hi-Wheel Push Mower in 21-Inch Deck, 11-inch wheels This 21 in. 3-in-1 cutting deck design provides superior life giving you professional looking lawn and the ability to mulch, bag, and discharge your clippings without needing additional tools to change modes ReadyStart Starting System takes the guess work out of starting your engine. No need to prime or choke - just pull. The sensor automatically senses the temperature of the engine and adjusts the amount of fuel it delivers so that it starts easy every time Easy rolling High Rear Wheels for added maneuverability on any terrain 3-in-1 mulch, bag or discharge capability allows you to spread grass clippings, or returning key nutrients to your lawn so your grass can grow healthy and thick or bag it up for a clean looking lawn