How to Repair Your 18v Ryobi String Trimmer - YouTube
RYOBI 40V HP Brushless 15 in. Cordless Carbon Fiber Shaft Attachment Capable String Trimmer and Edger Attachment (Tool Only) RY40209BTL-EDG - The Home Depot
Amazon.com : RYOBI 40-Volt Lithium-Ion Cordless Attachment Capable String Trimmer with 4.0 Ah Battery and Charger Included (Open Box) : Patio, Lawn & Garden