Husqvarna RZ4219 42-Inch 19.5 HP Briggs & Stratton Gas Powered Zero Turn Riding Lawn Mower 42-inch stamped 13 gauge cutting deck 19-1/2 hp briggs and stratton endurance engine 2 blade - manual engagement Dual Hydro-Gear EZT Drive System Front tires: 11 by 4 - 5 rear tires: 18 by 7-1/2 - 8 turf