Porter-Cable H451CS-W 4,500-Watt 9 HP Portable Generator with Honda Engine and Wheel Kit 4500-watt portable electric generator is powered by a powerful 9 HP Honda engine Low-oil protection mechanism prevents engine damage Four-gallon fuel tank provides up to 5.2-hours of power at full capacity Idle control automatically adjusts to save fuel when generator is not in active use Includes wheel kit with 10-inch pneumatic tires, two twistlock electrical plugs, engine oil, and an operating manual