.065-inch Diameter Premium Commercial Grade Twisted Trimmer Line. 420-Foot Length. Maxpower Twisted Commercial Grade trimmer line is designed to be the quietest, toughest, best-cutting and longest-lasting trimmer line on the market today. The Twisted line features includes less line drag, longer wear, significant improvement in energy efficiency, up to 50% noise reduction in the larger diameter lines, decreased equipment vibration and more impact power.