Compatibility: suitable for AFS 23-37/AFS 23-38 brushcutters.Nylon Line: The replacement spool is made of high quality raw material, the nylon line is flexible enough not to break easily, supporting fast trimming and longer service life.Efficient Cutting: Allows lines to stretch and cushion impact on hard surfaces, and the aerodynamic shape reduces drag for more efficient cuts.Appropriate Size: The cordless lawn mower spool is 3.5mm in diameter and fits snugly in the cord hole, providing a wider cut. The square helical structure has better flexibility and durability.Model Number:F016800431color:Silver blackMaterial:Metal + Plasticsize:Length about: 37cmPackage Contents:20 x F016800431 Cutting LineOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.