This trimming line reel is made from high-quality materials to ensure flexibility and durability for regular use. The included lawn mower replacement cover is constructed from durable materials to securely hold the line reel 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 replaced, and the trimmer automatically feeds the line using centrifugal force. This design eliminates the need to manually wind the line during operation, making your work less labor-intensive and more time-efficient.Designed for high-performance cutting, the 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 spool is pre-wound for convenience and can be replaced in seconds. Attach it securely using the simple "snap" featureno special tools or complex instructions required, just use your hands.Package includes: 4 replacement trimmer cord spools (compatible with models 196146-9/195858-1), 1 replacement spool 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 lawn care needs.Material: Nylon Color: White and black Package Contents: 4 x Spool 1 x Cover 1 x Spring 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.