Amazon.com : AC80RL3 String Trimmer Replacement Spool Line 080 Inch Twisted Line Compatible with Ryobi One Plus+ AC80RL3 18v, 24v, and 40v Cordless Trimmers ,Weed Eater String Auto-Feed Spool Line 11ft(8-Pack) :
RYOBI ONE+ HP 18V Brushless 13 in. Cordless Battery String Trimmer with 4.0 Ah Battery and Charger P20120 - The Home Depot
Ryobi 18V String Trimmer Review - Home Construction Improvement