21072 Gen1 20V 12-Inch String Trimmer - 20V Li-Ion 2.6 AH Battery and Charger Inc.Product ReviewP Click on the link for more reviewsPGreenWorks Gen1 20V Lithium-Ion Battery System offers a complete lawn care solutionP12-inch cutting path for easy manuevering around yardP.065 auto single line feed for ease of usePEasy edger button converts from trimmer to edger with a push of a button for versatile usePCompatible Only with Greenworks Gen1 20V 2.6 AH And 6.