Simple to operate and with a low maintenance design, the Tomahawk Power 8 ft. Aluminum Blade Board 37.7cc Gas Vibrating Concrete Power Screed Finishing Float Tool is the ultimate screed assembly for professional concrete jobs. Powered by an incredible 37.7cc engine, the float tool provides uniform vibration over the length of the blade for best concrete finishing results. Save more than 75% in labor costs when choosing Tomahawk over conventional finishing methods. Your purchase includes a 9 ft blade to use with the finishing float tool. Once that blade is worn out have no fear, you can easily change blades in less than 2 minutes.