The Hyper Tough 26cc Curved Shaft 17? Grass String Trimmer is a powerful tool. Powered by a Gas 2-cycle full-crank engine this trimmer is designed for reliability. The full crank design delivers a fast start and smooth operation reducing emissions increasing fuel efficiency and delivering longer life. Built with a robust aluminum tube the trimmer is lightweight and durable for many hours of use. The tap-and-go trimmer head with twin line cutting system allows you to make good use of up to a 17-inch cutting swath to finish the job quickly.