RYOBI 40V Expand-It Cordless Battery Attachment Capable Trimmer Power Head with 4.0 Ah Battery and Charger RY40226 - 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