Greenworks 14-Inch 40V Cordless String Trimmer (Attachment Capable), 4.0 AH Battery Included 21362 Attachment capable, accepts most gas attachments to provide mulitple use Brushless motor delivers greater torque, quieter operation and higher battery efficiency Starts within seconds with gas comparable performance, battery compatible with multiple tools Battery and Charger include. Compatible with battery models 29462 and 29472 and charger 29482 Compatible GreenWorks Replacement bulk string, Model 2906302