RYOBI 40V Cordless Attachment Capable String Trimmer and Leaf Blower w/ Extra 5-Pack of Pre-Cut Line, 4.0Ah Battery & Charger RY40940-AC - The Home Depot
For Ryobi Replace 10-Pack Spool One+ String trimmer Line 18V 24V 40V Weed Eater | eBay
Ryobi 40v String Trimmer Line Replacement - YouTube