Feature:1. The electric string trimmer spool uses centrifugal force and aerodynamics to reduce resistance and achieve fast cutting.2. Save tedious manual winding time, reduce damage to the thread cutter, and will not get stuck during cutting.3. Using highquality ABS spool and nylon thread, it is strong and durable, flexible, good toughness and long service life.4. The spool has a diameter of 0.065 inches, which fits perfectly with the wire hole, and the wire is 11ft long, providing a wider range of mowing.5. Easy installation and disassembly, can directly replace old or damaged parts, improve the efficiency of the lawn mower.Specification:Item Type: Trimmer SpoolMaterial: ABS, Nylon LineWeight: Approx. 153g / 5.4ozSpool Diameter: Approx. 0.2cm / 0.065inLine Length: Approx. 3.4m / 11ftCompatible Trimmer Model: For Ryobi One + String Trimmer - 18V 24V 40VCompatible Spool Part#: For Ryobi One + #AC14RL3ACompatible Cap Part#: 522994001, 3411546-7G, AC14HCA.Package List:6 x Trimmer SpoolNote:1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.