The Hyper Tough .065 in. x 16 ft. Twisted Replacement String Trimmer Spool 3-Pack provides quick and easy line loads which allows you to maintain your lawn without having to stop frequently for adjustments. Each spool is factory wound for smooth, reliable operation and comes with 16 feet of high performance .065-inch commercial grade, twisted trimmer line that outperforms other premium lines on the market. The formulation is scientifically engineered to deliver extreme durability.