Fits for RYOBI ONE+ CORDLESS TRIMMERS including the 18v, 24v, and 40v trimmers.Fits for all Ryobi auto-feed cordless string trimmers. The part/product is not sponsored or endorsed by,or affiliated with the brands it fit,including Ryobi. 6 pack of twisted copolymer nylon resin and synthetic trimmer/edger line,Premium weed eater string with 11ft/ 0.065" diameter easily cuts through grass and weeds. HIGH EFFICIENCY: Aerodynamic shape allows less drag for more efficient cuts,Auto Feed System replacement spool eliminates time spent hand-winding string trimmers. The edger replacement string spool line were made of premium quality raw material, ABS spool sturdy enough, nylon line string flexible, strong enough for long working life. Package includes: 6 x Trimmer Spool Line, Non original parts