MaxPower's includes 1 package of commercial grade Twisted trimmer line. This line measures 40 ft. in length and 0.065 inches in diameter for approximately 2 refills. 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.