Ryobi takes Cordless to the next level with the 40-Volt Lithium-ion String Trimmer. This string trimmer is designed to deliver cordless convenience without sacrificing power. This string trimmer delivers longer runtime, and fade-free power. And for you gas-lovers out there, this string trimmer actually delivers longer run time than a gas trimmer. Compared to Ryobi 2-Cycle String Trimmer. Ryobi also loads this string trimmer with convenient features like the 11-13 in. adjustable string width for ultimate cut control. The 90 degree pivoting head swings out for easy walk-behind edging.