FITS MODELS: Fits for One + Cordless Trimmer models: 18V, 24V, 40V. Spool model: AC14RL3A, Spool cap cover model: AC14HCA / 3411546-7G / 522994001. SIZE: Cordless grass trimmer spool line diameter 0.065 inch to fits line hole perfectly. Spool line length 11ft provide a wider range of mowing. DURABLE MATERIAL: Premium quality string trimmer spool replacement and durable helix design copolymer nylon thread, pliable and flexible and long service life. EASY TO USE AND INSTALL: Line is pre-wound for quick and easy spool changes.Easy to use and install pre-wound spool saves you time and energy. PRECAUTIONS FOR USE: Wear safety goggles and long pants when using this product to avoid injury from spilling lines. This cordless weed eater parts refill is only suitable for young grasses. Strong weeds use other tools such as blades to trim. Fits for : 18v - 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, RLT183225, RLT183225PK, RLT2925 24v - RY24000, RY24020, RY24021, RY24200 40v - RY40001, RY40021, RY40200, RY40201, RY40210, RY40210A size:11inch long, 0.065inch diameter Material:ABS, nylon colour:black+blue+grey Package Contents: 20 x Replacement Spool 2 x Replacement Spool Cap Cover Only the above package content, other products are not included. Note: Light 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.