FITS MODELS - Compatible with Ryobi One + Trimmer models: 18V, 24V, 40V. Spool model: AC80RL3, Spool cap cover model: AC14HCA / 3411546-7G / 522994001.VALUABLE PACKAGE - Includes 8 Pack weed wacker spool of allows hours of trimming and edging.1 Pack ABS spool cap cover is tough enough to fix the spool tight during mowing.DURABLE MATERIAL - Premium string trimmer spool replacement and durable helix design copolymer nylon thread, pliable and flexible and long service life.EASY TO USE AND INSTALL - Snap into place for quick and effortless replace without tools. Utilizes centrifugal force and aerodynamics to reduce drag and achieve fast cutting. Pre -wound spool saves you time and energy.PRECAUTIONS FOR USE - Wear goggles and long pants when using this product to avoid injury from spilling lines. This weed eater parts refill is only suitable for young grasses. Strong weeds use other tools.Please Note: These AC80RL3 spools does not fit for Ryobi 40-Volt Expand-it model RY40250. If you use our AC80RL3 spools, you need to take off the string and insert it into your original spool.Material: ABS, nyloncolour:greenPackage Contents:8 x String Trimmer Spool Line 1 x Spool cap coverOnly 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.