Compatibility: Compatible With Ryobi One + Ac14Rl3A. Suitable For Multiple Models Of Ryobi Cordless String Trimmers: 18V, 24V, 40V.Premium Material: The Replacement String Trimmer Spool Line Is Made Of High Quality Abs. Not Easy To Break Supports Fast Cutting And Longer Service Life.Convenience And High Efficiency: Flexible And Strong Cord For Cutting. Allowing The Line To Stretch And Cushion Impact On Hard Surfaces, The Aerodynamic Shape Allows For Less Drag For More Efficient Cuts.Auto-Feed Replacement Spool: Compatible With Cutter- Ryobi Edges And Uses Centrifugal Force To Power The Cutting Line As Needed. With The Auto-Loading System, The Replacement Spool Makes The Tedious Work Of Hand-Winding Spools Easy.Package Includes: 8 Packs Of Trimmer Replacement Line Spools And 2 Packs Of Trimmer Line Cap Covers Spare Are Packed In A Package For You. The Spool Is 11 Feet In Length And 0.065" In Diameter And The Cap Fits The Replacement Spool.