Weed eater string for Ko-balt 124-03, compatible with 24-volt max string trimmer models 1124B-03, 2024A-03, 1504979, and 1137837 Longer Lines: Dual-line spool provides long-lasting performance for cutting grass and weeds Pre-Cut: The dual-line spool comes pre-wound with 0.080 inch diameter line for quick and easy replacement Sturdy and Durable: Made from high-quality ABS and nylon material for enhanced durability Easy to Install: Pre-wound design allows for tool-free installation, making it simple to use and helping save time and effort Color: As shown in image Material: ABS + Nylon Package Contents: 3 x Spool Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.