RYOBI ONE+ 18V 10 in. Cordless Battery String Trimmer and Edger with 1.5 Ah Battery and Charger P2030 - The Home Depot
Ryobi Expand-It 18-Volt Lithium-Ion Cordless String Trimmer Power Head (Attachment Capable, Attachments, Battery and Charger NOT Included) - Walmart.com
Ryobi 18 volt Weed Eater String Trimmer - tools - by owner - sale - craigslist