?Compatible with Ryobi One?These replacement trimmer spools are compatible with Ryobi One cordless string trimmers, including 18V, 24V and 40V trimmers. ?Long life? The replacement spool has a diameter of 1.65mm and a length of 3 meters, it can be used for a long time. ?Cut weeds effectively?Made of high quality ABS spool and durable nylon thread, weeds can be cut easily and efficiently. ?Spool with thread?The spool with thread design reduces air resistance for more efficient cutting, with it you can reach hard-to-reach edges of garden lawns. ?Convenient?Easy to assemble and use, the automatic spool replacement saves time for reeling trimmers with 6 pack of Spimmer Line Trimmer. Ideal for replacement. Notes ?? -Unplug the power cord before replacing, installing or removing the accessory. ?? -Always wear protective glasses when the grass trimmer is in operation. ?? -Sharp edges, small parts out of reach of children under 3 years old. ?? -Not suitable for other grass trimmers. Specification: Diameter: 1.65mm Length: 3.35 meters (11 feet) for each roll, 20 meters (66 ft.) in total Quantity: 6 Pack Compatibility 18V - OLT1825, OLT1825M, OLT1830H, OLT1831, OLT1831H, OLT1831S, OLT1832, P2000 , P2001, P2002, P2003, P2004, P2005, P2006, P2200, RLT1825, RLT1825Li, RLT1825LL13, RLT1825M13, RLT1830H13, RLT1830H15, RLT1830H25, RLT1830Li, LT183113, RLT183115, RLT183125, RLT1831H20, RLT1831H25, RLT1831H25, RLT1831H25PK, RLT183213, RLT183220, RLT183225, RLT183225PK, RLT2925 24V - RY24000, RY24020, RY24021, RY24200 < br /> 40V - RY40001, RY40021, RY40200, RY40201, RY40210, RY40210A ?? ?? ??Satisfaction Guarantee: We greatly appreciate your purchase. We give top priority to the quality and packaging of the paper cutter reel. Please do not hesitate to contact us if you have any complaints regarding the quality of this product and our service. LRFR is committed to providing each customer with the highest possible quality of customer service.