Efficiency Upgrade: DoubleHelix design increases cutting efficiency while reducing noise and line flutter. Durability Ensured: Made from copolymer nylon resin and synthetic materials, offering abrasion resistance and reliability. Aerodynamic Advantage: Pliable and flexible line with an aerodynamic shape reduces drag for more efficient cuts. Easy Compatibility: Designed to fit seamlessly with select WORX lawn and garden products, ensuring compatibility. Time-saving Installation: Pre-wound spools offer quick and hassle-free setup for immediate use. Discover our 6/8 pack of replacement trimmer spools, featuring an advanced DoubleHelix cutting line that significantly boosts cutting efficiency. Engineered from copolymer nylon resin and synthetic materials, these spools are durable and resistant to wear. Perfectly compatible with WORX lawn equipment, they ensure a smooth operation with less noise and reduced line flutter. The aerodynamic design minimizes drag for optimal performance. Ideal for time-saving installation, these pre-wound spools are your go-to solution for effortless trimming tasks.