Trimmer Line Spool Fits Ryobi One +18v 24v 40v (6 Trimmer Line Spools,1 Cover)Replacement Trimmers for Ryobi One +Compatible with Ryobi Cordless String Trimmers18V -OLT1825, OLT1825M, OLT1830H, OLT1831, OLT1831H, OLT1831S, OLT1832/ P2000, P2001, P2002, P2003, P2004, P2005, P2006,P2200/ RLT1825, RLT1825Li, RLT1825LL13, RLT1825M13, RLT1830H13/ RLT1830H15, RLT1830H25, RLT1830Li, RLT183113, RLT183115/ RLT183125, RLT1831H20, RLT1831H25, RLT1831H25/ RLT1831H25PK, RLT183213, RLT183220, RLT183225RLT183225PK, RLT2925/ 24VRY24000, RY24020, RY24021, RY24200/40vRY40001, RY40021, RY40200, RY40201, RY40210, RY40210A.Automatic Feed SpoolWeed wacker string replacements for Ryobi weed eater is easy to use, automatically feeds the trimmer by centrifugal force, reducing the trouble of manually sorting the replacement trimmer line spool during work.Abrasion ResistantTrimmer string replacements for Ryobi weed eater is constructed with upgraded nylon polyamide material which has a tensile strength of over 100 pounds and is 30% more durable than other brands for longer life.Cutting EfficiencyThe weed eater string replacements for Ryobi is soft and flexible, allowing the line to stretch and cushion upon impact with hard surfaces, and increase cutting efficiency by 50%, allowing each spool to cut more weeds.+ productManual winding usually causes uneven surface, it makes the trimmer difficult to work, the pre-installed spool is more convenient, protects your Ryobi cordless trimmers and extends the life of your machine.It automatically feeds when needed, which is achieved by centrifugal force, so please note that the automatic feeding must be in high speed.You have to put the coil in the right way and close the cap to secure it. The coils work well once you get the hang of it.FeaturesProduct Dimensions:Line Diameter: 0.065 inLine Length: 11ft/bundleMaterial: Copolymer nylon resinPackage includes: storage box*1, spool cover*1, trimmer thread*6.