This trimming line reel is made from high-quality materials to ensure flexibility and durability even with regular use. The included lawn mower replacement cover is constructed from high-grade materials to securely hold the line reel and keep it in place during mowing tasks. This product focuses on functionality, user safety, and reliable performance.The self-feed trimming line reel simplifies trimming tasks. The line spool can be easily changed, and the trimmer automatically feeds the line using centrifugal force. This design eliminates the need to manually wind the line during operation, making the task less labor-intensive and time-saving.Designed for high-performance cutting, its aerodynamic shape reduces drag for more efficient operation, allowing you to cut more grass in less time. A high-quality solution for improved trimming efficiency.Installation and removal are quick and easy, making these trimmer line reels user-friendly. Each reel is pre-wound for convenience and can be replaced in seconds. Attach it securely using the simple "snap" feature no special tools or complicated instructions required, just your hands.Package includes: 4 replacement trimmer cord reels (196146-9/195858-1), 1 replacement cord reel cover (231352-0), and 1 spring. These replacement parts are compatible with Akkusense 18V DUA181Z, DUR181RF, DUR181, and MAKITA trimmers. A complete set that offers great value for your lawn care needs.Material: nylon Color: white + black Package Contents: 4 x spool 1 x lid 1 x spring Note: Light reflection and differences in display screens may cause slight variations in color compared to the actual item. Measurement may vary by +/- 1-3 cm.