Greenworks 20072 Gen1 20V 10-Inch Chain Saw - 20V Li-Ion 2.6 AH Battery and Charger Inc. (Discontinued by Manufacturer) GreenWorks Gen1 20V Lithium-Ion Battery System offers a complete lawn care solution 10-inch steel bar and chain for easier cutting of small limbs 3/8-inch chain pitch allows for greater cutting capality Simple tool adjust chain tensioning for ease of use Compatible Only with Greenworks Gen1 20V 2.6 AH And 6.0 AH Batteries, Model 29612 and 29212 and Charger Model 29247