We make our Aero-Glide Trimmer Line using a premium-grade resin. This line measures .105 inches in diameter. We package it in a three-pound spool. 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. We make our trimmer line to last. Our premium-grade resin material increases the life of the line.