Replenish your line trimmer with RYOBI 2.40mm x 15m Whisper™ Series Trimming Line and enjoy quieter garden maintenance. It features an aerodynamic spiral shape, which creates less air drag and effectively reduces noise while it spins. Less air drag reduces strain on your line trimmer’s motor and helps extend the battery runtime. The durable, reinforced core is highly resistant to breakage, which helps eliminate the hassle of constant line refills for a single job. Made from high-quality resin, the Trimming Line is resistant to excess friction and heat inside your line trimmer’s head.