A.M. Leonard Aero-Glide Trimmer Line features a premium-grade resin construction. This twist-style line measures .095-inch in diameter. Available in 1-pound, 3-pound, or 5-pound rolls. This style of trimmer line features multiple cutting edges. This multi-edge design cuts cleanly and quickly. The twisted shape improves the aerodynamics of the line. This improvement reduces noise and decreases vibration, which enhances fuel/battery efficiency. A.M. Leonard makes this trimmer line to last. The premium-grade resin material combined with the round shape results in one of the longest wearing lines on the market.